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Surging COVID-19 rates throughout the country and in many parts of the world make our efforts to protect ourselves and others more important than ever. Layers of protection offer the best defense against COVID-19, starting with vaccines and boosters for everyone eligible.

Vaccinated and boosted people are far better protected against severe disease, hospitalizations, and death. But everyone — even vaccinated people — may spread infection with a highly contagious variant like Omicron if they get it. In places where vaccination rates are low or COVID cases are rising, experts estimate we can save thousands of lives and help control the pandemic if we all commit to following mask guidelines and other standard preventive measures.

Why do we believe masks work?

An expanding body of evidence supports the benefits of medical and nonmedical masks. Some of the strongest evidence includes these reviews (here and here) and observational studies (here, here, here, and here), which found that mask-wearing leads to lower rates of infection. And this impressive graphic display from the New York Times shows how masks help trap larger respiratory droplets and some of the smaller particles known as aerosols.

Mask-wearing helps protect against illness from viruses that travel through the air — not just COVID-19, but also colds and flu. Some people worry that masks trap carbon dioxide (CO2) or limit the amount of oxygen you inhale, but that’s not true. As you breathe out in a mask, C02 escapes; as you breathe in, you receive oxygen.

No single study is perfect or definitive; in fact, such studies would be impossible to perform. But there is a lot going for mask-wearing, and little or no evidence that wearing a mask causes harm.

Which type of mask is best?

The Centers for Disease Control and Prevention (CDC) recommends wearing the most protective mask you can find.

Consistently wearing masks designed to filter out very small particles offers the best protection against highly contagious variants, such as Omicron. Examples include

• N95 masks approved by the National Institute for Occupational Safety and Health (NIOSH)
• KN95 masks, which are certified in China and not approved by NIOSH, but have similar effectiveness as N95 masks.

Unfortunately, counterfeit N95 and KN95 masks have become common. The CDC offers useful information on ways to spot counterfeit masks.

Surgical masks are helpful, but less protective, partly because they do not fit snugly. Some experts suggest double-masking if you’re using surgical or cloth masks.

What about tightly woven cloth masks with a wire bridge and at least two layers of washable, breathable fabric that completely cover the nose and mouth? These masks can be comfortable but offer less protection than N95 and KN95 masks.

Gaiters and bandanas may offer little protection and aren’t generally the first choice, because they were not designed to provide tight facial coverage and may have only one layer. Masks with vents or valves are also discouraged, as virus particles can more easily escape through them.

Where are we still seeking answers?

Here are a few of the most common and important questions for which we don’t have great answers just yet.

• Does wearing a mask protect others, the wearer, or both? A mask helps keep the wearer from spreading airborne viruses while breathing, speaking, or coughing. Current evidence suggests that the person wearing a mask also reaps benefits, although the greatest benefit occurs when everyone wears a mask. In places where COVID-19 cases are substantial or high (see maps), wearing a mask in public indoors may help protect you and prevent spread to others. Remember, not all children are eligible for vaccines and boosters, and anyone whose immune system is compromised by illness or treatments needs to be protected from COVID-19.
• Do masks reduce the severity of infection? Because masks can reduce the "dose" of virus exposure, and because a lower amount of exposure might cause less severe infection, some have suggested that universal mask wearing might induce immunity with less lethal infections. This remains controversial and unproven, however, and should not be assumed to be true.
• Is it necessary to wear a mask outdoors? That depends on the situation. If you’re going for a walk outdoors and no one is around, wearing a mask is unnecessary. On the other hand, if you’re in close contact with people outdoors in a setting where keeping a distance isn't possible, wearing a mask is strongly encouraged. And of course, you should follow local health regulations and mandates.

Mask dos and don’ts

Masks work well only if worn consistently and correctly.

• A mask should fit snugly over your nose and mouth, with no gaps at the edges of the mask.
• The more comfortable a mask is, the more likely you are to wear it. Try a few styles to see which ones fit and feel best.
• Avoid the "exposed nose," the "chin diaper," the "dangling earring," and other creative approaches that keep the mask from fully covering your nose and mouth.
• When removing a mask, touch only the loops or ties that hold it on, and fold together the outside corners before disposing of it or washing it if it’s a fabric mask. Then wash your hands well.

The CDC offers advice for

• snugly wearing masks if you have a beard
• children or people with certain disabilities who may find it hard to wear a mask
• washing and storing reusable masks.

The bottom line

The best available evidence shows that mask-wearing can help reduce spread of COVID-19 infections, keep waves of serious illness from overburdening our hospitals, and save lives — possibly even yours.

It’s winter, as a glance outside your window may tell you. COVID-19 is circulating at record levels across much of the country. Keeping our immune systems healthy has taken on new importance, as many of us hope to ward off flu and winter colds as well as worrisome variants of the virus that causes COVID-19, whether Delta or Omicron.

Not surprisingly, marketers are taking advantage of our concerns. A whole cottage industry is devoted to chewables, pills, and powders that claim to “boost” or “support” your immune system. Some people even claim that healthy eating and vigorous workouts are all you truly need to avoid getting sick. But are any of these claims true?

The best strategies for staying healthy

I asked Michael Starnbach, professor of microbiology at Harvard Medical School, for his advice on steps that can help us stay in good health this winter.

“Vaccination, skepticism of any other products claiming immune benefits, and staying away from places without universal masking are the best strategies,” he says. Here’s why these approaches count.

Get vaccinated

When it comes to improving your immune response, getting the COVID vaccine and booster shot, along with other recommended vaccinations, is best. Think of vaccination as a cheat sheet for your immune system. When a viral invader makes its way into your body, your immune system prepares to fight. But first it has to figure out what’s attacking, which takes time — time that allows the virus to keep multiplying inside your body.

A vaccine introduces the immune system to the invader ahead of time and allows it to develop a battle plan. So when the virus does show up at the door, your immune system can react quickly, which may mean no symptoms, or at least preventing serious illness. A booster shot is a refresher course to keep those lessons fresh.

While it is possible to become infected even if you are vaccinated, your immune system is primed to clear the virus more rapidly, so the infection is far less likely be severe or life-threatening. “We should get all available vaccines and boosters so that if we do get infected, we have a better chance of having a mild case,” says Starnbach.

Be skeptical

Any number of vitamin formulations and probiotics claim to boost or support your immune system. And while there is a grain of truth to some of those claims, the big picture is that they often don’t work. For example, vitamins do help immune function, but really only in people who have a vitamin deficiency — not in an average, healthy adult.

Probiotics also hold promise. This mini-universe of organisms living in your gut called the microbiome does play an important role in immunity. But experts don’t know enough about that role to create a product that can manipulate the microbiome to enhance immunity. That may change over the next decade — but for now, view probiotic claims with a healthy dose of skepticism, says Starnbach.

Mask up

Ultimately, nothing is better at keeping you well than avoiding exposure to a virus altogether. Wearing a mask isn’t on anyone’s favorites list, but it can help reduce the risk of spreading COVID (and some other viruses) to people who are unvaccinated, including children who aren’t yet eligible for the shot, and people with immune system deficiencies who don’t get adequate protection from the vaccine, says Starnbach. Masks are most effective when everyone around you is wearing one. “We now know clearly that the best way to prevent the unvaccinated from becoming infected is by indoor mask mandates,” says Starnbach.

Practice good health habits

But what about exercise and good nutrition? Do they have a role in supporting your immune system?

The answer is yes. Strategies to improve your overall health are never wasted. Healthy people are more resistant to disease, and often fare better if they are infected. Good health habits can help your immune system operate at its peak. Exercise and good nutrition aren’t the only habits that can help. You should also try to get consistent, high-quality sleep and manage your stress level. Lack of sleep and chronic stress can impair immune function.

But if you hope to avoid COVID-19 and other viruses, these strategies should come in addition to — not as a substitute for — vaccination and other protective measures.

Just about everyone experiences knee pain at some point in their lives. Most of the time, it follows an injury or strenuous exercise and resolves in a few days, but knee pain can last months or even years, depending on the cause. A new study suggests telehealth programs designed for people with knee osteoarthritis may help ease pain, improve ability to function, and possibly even lead to weight loss.

What is osteoarthritis of the knee?

Osteoarthritis (OA) — the age-related, “wear-and-tear” degeneration of the knee joint — is the number one cause of chronic knee pain, affecting nearly a quarter of people age 40 or older. It’s responsible for most of the 600,000 knee replacements in the US each year, and more than $27 billion in annual healthcare spending.

How is it treated?

No treatment for knee OA is ideal or works in every case. Standard approaches to treatment include pain management, exercise, and loss of excess weight.

For pain, people with knee OA may consider

• anti-inflammatory drugs that are rubbed on the skin, such as diclofenac gel
• anti-inflammatory medicines, such as ibuprofen
• pain relievers, such as acetaminophen
• injections of corticosteroids.

Opiates, arthroscopic surgery, and other injected treatments are not routinely recommended due to risks, lack of proven benefit, or both. Knee replacement surgery has a high success rate for knee OA, but is generally considered a last resort because it’s major surgery that requires significant recovery time.

Virtual visits can help

Before the COVID-19 pandemic, many people with knee OA regularly saw their healthcare providers to

• monitor their pain and ability to function
• consider changes in treatment
• check for treatment side effects
• determine if other problems are contributing to symptoms.

It turns out, much of this can be done virtually. The pandemic made it a necessity. And a new study suggests it works.

What did the study on knee osteoarthritis find?

The study demonstrated that telehealth visits are a good way to provide care to people with knee OA. The researchers enrolled nearly 400 participants who had knee OA and were overweight or obese. They were divided into three groups:

• Group 1 was given access to a website that provided information about OA, including pain medications, exercise, weight loss, and pain management.
• Group 2 received the same information as group 1, and also engaged in six exercise sessions with a physical therapist by videoconference. These sessions lasted 20 to 45 minutes and included advice about self-management, behavioral counseling, and education about choosing exercise equipment.
• Group 3 followed the same format as group 2, and also had six consults by videoconference with a dietitian about weight loss, nutrition, and behavioral resources. These sessions also lasted 20 to 45 minutes.

After six months, participants in groups 2 and 3 reported pain relief compared to Group 1. On a pain scale of 1 to 10:

• group 3 improved more than group 1 by 1.5 points
• group 2 improved more than group 1 by about 1 point.

People in groups 2 and 3 also had better scores for function compared to group 1. All of these improvements were considered meaningful and held up for at least 12 months.

In addition, those assigned to group 3 lost about 20 pounds over the course of the study, while the other groups’ weights were nearly unchanged. That’s an important finding, because excess weight can worsen osteoarthritis of the knee. Losing excess weight can improve symptoms and help prevent the arthritis from getting worse.

Since there was no comparison with in-person care, it’s impossible to say whether these virtual visits were better, worse, or similar to an office visit. In addition, this study did not report the costs of these virtual sessions, the long-term impact of virtual visits, or whether repeated virtual visits could maintain the improvements people reported.

The bottom line

The pandemic is giving researchers an opportunity to seriously study the potential value and limitations of virtual care on a large scale. If these visits are as good as or better than in-person visits for certain conditions and the costs are no greater, that’s a big deal. A virtual visit can eliminate time spent in travel and the waiting room, and possible parking fees that can make a brief doctor’s visit an expensive undertaking that takes half the day. Virtual care also has the potential to reach patients who otherwise cannot get to their doctor’s office.

Of course, telehealth isn’t equally available to everyone due to language barriers, technical abilities, health insurance plans, or simply not having access to smartphones, computers, or data plans. Some states are letting emergency measures supporting telehealth services expire. And some insurers may resort to pre-pandemic rules about coverage or physician licensing that create uncertainty about the future of telehealth.

This study and others suggest that it may be a mistake to curb telehealth just when it’s catching on. More studies like the one described here may make the case to insurers, regulatory agencies, healthcare providers, and patients that the future of medical care should rely on more, not less, virtual healthcare, and encourage approaches that overcome barriers to its use.

Last winter, my wife shooed the dog and visiting toddlers away from our poinsettia plants, saying "they’re poisonous, you know."

I did not know. But it turns out that the belief that poinsettias are deadly is widespread. The same could be said for mistletoe and holly. But are their reputations for danger well-deserved? Since these plants are especially popular to brighten up homes or give as gifts during the holidays, I decided to look into it.

The risks of poinsettia

Could a plant so common and so well-liked in the winter holidays also be so dangerous? If it is dangerous, what problems does it cause? Must it be eaten to cause problems, or is it harmful to just be nearby? And if it’s not dangerous, why does the myth live on?

The answers to these questions are not easy to find. In fact, the bad reputation may have started in 1919, when an army officer’s child reportedly died after eating part of a poinsettia plant. It is unclear if the plant was responsible, though: many other reports describe mild symptoms, such as nausea or vomiting, but no deaths.

Decades ago, a study in the American Journal of Emergency Medicine analyzed nearly 23,000 cases of people eating poinsettia and found

• no fatalities
• nearly all cases (96%) required no treatment outside the home
• most cases (92%) developed no symptoms at all.

According to one estimate, a 50-pound child would have to eat more than 500 poinsettia leaves to approach a dose that could cause trouble. Similarly, pets may develop gastrointestinal symptoms after eating poinsettia, but these plants pose no major threat to animals.

The risks of mistletoe

The story is much the same for mistletoe. It’s not particularly dangerous, but may cause an upset stomach if eaten. In fact, mistletoe has been used for centuries as a remedy for arthritis, high blood pressure, infertility, and headache. The evidence isn’t high-quality for any of these uses, though.

Interest also centers on this plant’s potential as an anticancer treatment. Some extracts of mistletoe contain chemicals shown to kill cancer cells in the laboratory and to stimulate human immune cells. For example, a substance called alkaloids has similar properties as certain chemotherapy drugs used in the past to fight leukemia and other forms of cancer. However, a two-part 2019 review found that adding mistletoe extracts to conventional cancer treatments did not improve survival or quality of life.

No one suggests it's a good idea to eat this plant, accidentally or otherwise. But eating one to three berries or one or two leaves is unlikely to cause serious illness, according to the authors of a 1986 review of multiple studies. And no significant symptoms or deaths were described in one report of more than 300 cases of eating mistletoe. However, some sources warn that serious problems or even death may occur if enough is ingested. The specific dose required to cause death is unknown but, fortunately, it appears to be so high that consuming enough to be lethal is extremely rare.

The risks of holly

This plant can be dangerous to people and pets. The berries of holly plants are poisonous. If eaten, they may cause crampy abdominal pain, drowsiness, vomiting, and diarrhea. While no one would recommend eating holly, it is unlikely to cause death. And for at least one type of holly, knowing the Latin name would be enough to discourage ingestion: the yaupon holly is also called Ilex vomitoria.

The bottom line

No one should eat poinsettias, mistletoe, and holly, but if small amounts are consumed, they are unlikely to cause serious illness. It seems to me that the dangers of these plants appear to be vastly overestimated.

Perhaps the most dangerous thing about mistletoe and poinsettias is the choking hazard the berries pose for young kids, although that risk is not unique to plants: any small object poses similar risks. Try to keep holiday plants out of the reach of small children and pets. And keep in mind that berries may fall from these plants and wind up on the floor.

If a child or pet eats leaves or berries from these holiday plants, or any other plants, check in with poison control, your pediatrician, or your veterinarian. But unless a particularly large "dose" is consumed, don’t be surprised if the recommendation is to simply watch and wait.

Still concerned even if you know the risks are low? You can always regift holiday plants you receive to friends with no children or pets, or find other ways to decorate your home for the holidays.

Did you know that of the 6.2 million people with Alzheimer’s disease who are age 65 or older in this country, almost two-thirds are women? This means that Alzheimer’s disease is almost twice as common in women compared to men. Why is Alzheimer’s disease more common in women?

Women live longer

The first and most important reason is that women tend to live longer than men. If you look at actuarial life tables, you can see that a baby girl born in 2019 is likely to live five years longer than a baby boy: 81 versus 76 years.

The greatest risk factor for Alzheimer’s disease is age: the older you are, the more likely you are to develop Alzheimer’s disease. For example, out of 1,000 people, the incidence (the number who develop Alzheimer’s each year) depends on age:

• 4 out of 1,000 people ages 65 to 74 develop Alzheimer’s each year
• 32 out of 1,000 people ages 75 to 84 develop Alzheimer’s each year
• 76 out of 1,000 people ages 85 and older develop Alzheimer’s each year.

So, one reason that there are more women with Alzheimer’s disease than men is simply that there are more older women than older men living in our society — 5.7 million more of them — and the older you are, the more likely you are to develop Alzheimer’s disease.

But that’s not the whole answer.

The incidence of Alzheimer’s is greater in women

Your chances of developing Alzheimer’s disease late in life are somewhat greater if you are a woman than a man. One study followed 16,926 people in Sweden and found that, beginning around age 80, women were more likely to be diagnosed with Alzheimer’s disease than men of the same age. Similarly, a study based in Taiwan found that one’s chances of developing Alzheimer’s disease over seven years was greater in women compared to men. And a meta-analysis examining the incidence of Alzheimer’s disease in Europe found that approximately 13 women out of 1,000 developed Alzheimer’s each year, compared to only seven men.

So, women living longer than men cannot be the whole answer as to why women are more likely than men to develop Alzheimer’s disease, because even among individuals who are living and the same age, women are more likely to be diagnosed with Alzheimer’s than men.

The incidence of non-Alzheimer’s dementia is not greater in women

One clue to the answer to this puzzle is that your chances of developing dementia from a cause other than Alzheimer’s disease is not greater if you are a woman. For example, the study examining dementia rates in Sweden found that both women and men were equally likely to develop a non-Alzheimer’s dementia as they aged. That rates of Alzheimer’s disease differ by gender, whereas rates of non-Alzheimer’s dementias do not, suggests that there must be a specific interaction between Alzheimer’s disease and gender.

Amyloid deposition in Alzheimer’s may be fighting infections

Another clue to this puzzle comes from the work of Harvard researchers, who have suggested that amyloid, one component of Alzheimer’s disease pathology, may be deposited in order to fight off infections in the brain. If their suggestion turns out to be correct, we might think of Alzheimer’s disease as a byproduct of our brain’s immune system.

Autoimmune disorders are more common in women

The last piece of the puzzle is that women are about twice as likely to have an autoimmune disease compared to men. The reason for this difference is not entirely clear, but it is clear that the immune system is generally stronger in women than men, and many autoimmune diseases are more common during pregnancy. It may be that women’s stronger immune system developed through evolution to protect the fetus from infections. So, as part of their stronger immune systems, women may end up having more amyloid plaques than men.

Putting the pieces together

By combining all of this information, one possible explanation as to why women’s risk of Alzheimer’s disease is greater than men’s — in addition to women living longer — is:

• The amyloid plaques that cause Alzheimer’s disease may be part of the brain’s immune system to fight against infections.
• Women have stronger immune systems than men.
• As part of their stronger immune systems, women may end up having more amyloid plaques than men.
• Because they may have more amyloid plaques than men, this theory may explain why women end up having a greater risk of developing Alzheimer’s disease.

Please note the italicized words "may" that I have used. Although the ideas I have presented here are logical, coherent, and form the basis of a good theory, they have not yet been proven to be correct. More research is needed!

The bottom line

You are more likely to develop Alzheimer’s disease over your lifetime if you are a woman, because women live longer than men and, possibly, because women have stronger immune systems compared to men.

Does that mean that if you’re a woman, you’re more likely to develop Alzheimer’s disease and there’s nothing you can do about it? Not at all! You can do many things to reduce your risk of Alzheimer’s today.

• Engage in aerobic exercise such as brisk walking, jogging, biking, swimming, or aerobic classes at least 30 minutes per day, five days per week.
• Eat a Mediterranean menu of foods including fish, olive oil, avocados, fruits, vegetables, nuts, beans, whole grains, and poultry. Eat other foods sparingly.
• Sleep well — and clean those Alzheimer’s plaques out of your brain.
• Participate in social activities and novel, cognitively stimulating activities.

During the first year of life, naps are crucial for babies (who simply cannot stay awake for more than a couple of hours at a time), and crucial for parents and caregivers, who need breaks from the hard work of caring for an infant.

But as children become toddlers and preschoolers, naps aren’t always straightforward. Children often fight them (following the “you snooze you lose” philosophy), and they can conflict with daily tasks (such as school pick-up when there are older siblings) or lead to late bedtimes.

Here are some tips for making naps work for you and your child — and for knowing when they aren’t needed anymore.

Making naps work for your baby

Most infants will take at least two naps during the day, and early in toddlerhood most children will still take both a morning nap and an afternoon nap. Naps are important not just for physical rest and better moods, but also for learning: sleep allows us to consolidate new information. As children get older, they usually drop one of the naps, most commonly the morning nap.

Every child is different when it comes to napping. Some need long naps, some do fine with catnaps, some will give up naps earlier than others. Even within the same family, children can be different. A big part of making naps work is listening to and learning about your child’s temperament and needs. Otherwise, you can end up fighting losing battles.

The needs of a parent or caregiver are also important: everyone needs a break. Sometimes those breaks are particularly useful at specific times of the day (like meal prep time). While you can’t always make a child be sleepy at the most convenient time for you, it’s worth a try — which leads me to the first tip:

Schedule the naps. Instead of waiting for a child to literally drop and fall asleep, have a regular naptime. We all do better when our sleep routines are regular, even adults. If you can, put the child down awake (or partially awake). Learning to fall asleep without a bottle or a breast, or without being held, is a helpful skill for children to learn and can lead to better sleep habits as they grow.

A couple of scheduling notes:

• If you need a child to fall asleep earlier or later than they seem to do naturally, try to adjust the previous sleep time. For example, if you need an earlier morning nap, wake the child up earlier in the morning. It may not work, but it’s worth a try.
• Naps later in the afternoon often mean that a child won’t be sleepy until later in the evening. That may not be a problem, but for parents who get tired early or need to get up early, it can be. Try to move the nap earlier, or wake the child earlier. If the problematic afternoon nap is in daycare, talk to the daycare provider about moving or shortening it.

Create a space that’s conducive to sleep. Some children can sleep anywhere and through anything, but most do best with a space that is quiet and dark. A white noise machine (or even just a fan) can also be helpful.

Don’t use screens before naptime or bedtime. The blue light emitted by computers, tablets, and phones can wake up the brain and make it harder for children to fall asleep.

When is it time to give up naps?

Most children give up naps between the ages of 3 and 5. If a child can stay up and be pleasant and engaged throughout the afternoon, they are likely ready to stop. Some crankiness in the late afternoon and early evening is okay; you can always just get them to bed earlier.

One way to figure it out, and ease the transition, is to keep having “quiet time” in the afternoon. Have the child go to bed, but don’t insist on sleep; let them look at books or play quietly. If they stay awake, that’s a sign that they are ready to stop. If they fall asleep but then end up staying up very late, that’s another sign that the afternoon nap needs to go.

Whether or not your child naps, having some quiet time without screens every afternoon is a good habit to get into. It gives your child and everyone else a chance to relax and unwind, and sets a placeholder not just for homework but also for general downtime as children grow — and just like naps for babies, downtime for big kids is crucial.

Follow me on Twitter @drClaire

If you have trouble losing weight despite your best efforts, this is because obesity is a complex disease with many causes. A family history of weight issues can make it more likely that you’ll have the same issues managing your weight. A diet high in ultra-processed foods, sugar, and fat and being sedentary also contribute to weight gain. Stress and struggles with mental health, including medications to treat certain mental health conditions, poor sleep, and hormonal changes, are all factors that further contribute to weight gain.

There are many ways to combat excess weight, but there is no single solution. If you are trying to lose or maintain your weight, you may want to try yoga. There is good research that yoga may help you manage stress, improve your mood, curb emotional eating, and create a community of support, all of which can help with weight loss and maintenance.

Yoga can also help you burn calories, as well as increase your muscle mass and tone. Yoga may reduce joint pain, which in turn allows you to exercise more and increase your daily activities. These are only some of the many benefits of yoga.

Yoga can help you manage stress that can impact weight gain

Yoga is derived from the Sanskrit word yuj, which means to unite the body, mind, and emotions. It is a holistic mind-body practice that improves many of the causes of weight gain.

Some people may experience stress as physical pain or sleep deprivation, or it may be psychological and cause feelings of anxiety and agitation. Stress leads to an increase in the hormone cortisol. Cortisol increases abdominal fat, decreases muscle mass, causes cravings for fat and sugar-rich food, and thus can lead to obesity.

Yoga can decrease stress and cortisol levels, enhance mood, decrease anxiety and depression, improve sleep, and improve chronic conditions such as hypertension and diabetes, reducing the need for medications that can cause weight gain.

Yoga is not a band-aid for excess weight, but it may work on the underlying causes. Its benefits extend beyond the calories-in-versus-calories-out equation.

Yoga can improve mindfulness related to eating behaviors

Most of us who crave ice cream after 9 pm or can’t stop eating potato chips know that these behaviors hurt our chances of losing weight. We all know that eating vegetables, whole grains, lean protein, etc. is good for our health and weight. While this knowledge is necessary, it seems insufficient to help us stick to our healthy eating plans.

One of yoga’s benefits is that it improves mindfulness of the body and awareness of body sensations. This is why yoga is called “moving meditation.” Research shows that you don’t have to do any formal sitting meditation to get the mindfulness benefits of yoga.

By improving mindfulness, yoga decreases emotional eating, stress eating, and binge eating. These habits sabotage our weight loss efforts and can cause a negative spiral of guilt and shame, which often leads to giving up.

A study published in 2015 showed that practicing yoga led to healthier eating, including lower fat intake and an increase in vegetables and whole grains.

The bottom line: the best diet plan is the one that you can stick with over the long term, and by improving mindfulness, yoga can help you make healthier food choices.

A yoga community can provide acceptance and support

Going to a gym can be intimidating, and may provoke feelings of not belonging for some people with larger bodies. By contrast, yoga culture embodies kindness, support, and self-acceptance.

Yoga teachers and advanced practitioners can serve as role models and inspire newer students to live a healthier lifestyle. Research shows that social networks influence behaviors that affect weight. The yoga network encourages positive health behaviors, and being a part of such a community can make a meaningful difference for weight loss. This type of community can be hard to find with other types of exercise.

Practitioners should look for a safe, comfortable environment. A welcoming yoga group may help you improve your self-esteem and confidence. Find a local studio that feels nurturing and not overwhelming, with other practitioners at your level. Teachers can help beginners or those with physical limitations by modifying poses. You might have to try a few different classes before you find an instructor or a class that you like. Don’t give up after the first one!

If you can’t find a local studio, there are always online options on YouTube and Instagram, with classes at all levels. There are instructors who understand what it is like to be a larger size, and having an inclusive, body-affirming attitude shows that yoga is not just for “skinny people.” Some share inspirational stories of how yoga helped them overcome their own weight struggles, depression, and binge eating. If you are a beginner, consider signing up for a short challenge to get committed to the practice.

The benefits of yoga are universal — no matter what your shape or size. It can take weeks or months to establish a yoga practice, and frequent practice is key for long-lasting benefits.

Follow Dr. Anekwe on Twitter @Chikagirl

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Let’s file this under unsurprising news: many American adults report drinking more since the pandemic began in March 2020, according to a survey on alcohol use in the time of COVID-19. If you’re among them, you might want to start 2022 on a healthy note by joining the millions who abstain from alcohol during Dry January. Your heart, liver, memory, and more could be the better for it.

What did this survey find?

The researchers asked 832 individuals across the US about their alcohol intake over a typical 30-day period. Participants reported drinking alcohol on 12.2 days and consuming almost 27 alcoholic drinks during that time. More than one-third reported engaging in binge drinking (consuming five or more drinks for men and four or more drinks for women in about two hours).

Moreover, nearly two-thirds of the participants said their drinking had increased compared to their consumption rates before COVID. Their reasons? Higher stress, more alcohol availability, and boredom.

But we can’t blame COVID entirely for the recent rise in alcohol consumption. Even before the pandemic, alcohol use among older adults had been trending upward.

Why try Dry January?

If you recognize your own behavior in this survey and wish to cut down on your alcohol intake, or simply want to begin the new year with a clean slate, join in the Dry January challenge by choosing not to drink beer, wine, or spirits for one month. Dry January began in 2012 as a public health initiative from Alcohol Change UK, a British charity. Now millions take part in this health challenge every year.

While drinking a moderate amount of alcohol is associated with health benefits for some people in observational studies, heavier drinking and long-term drinking can increase physical and mental problems, especially among older adults. Heart and liver damage, a higher cancer risk, a weakened immune system, memory issues, and mood disorders are common issues.

Yet, cutting out alcohol for even a month can make a noticeable difference in your health. Regular drinkers who abstained from alcohol for 30 days slept better, had more energy, and lost weight, according to a study in BMJ Open. They also lowered their blood pressure and cholesterol levels and reduced cancer-related proteins in their blood.

Tips for a successful Dry January

A month may seem like a long time, but most people can be successful. Still, you may need assistance to stay dry in January. Here are some tips:

• Find a substitute non-alcoholic drink. For social situations, or when you crave a cocktail after a long day, reach for alcohol-free beverages like sparkling water, soda, or virgin beverages (non-alcoholic versions of alcoholic drinks.)

  Non-alcoholic beer or wine also is an option, but some brands still contain up to 0.5% alcohol by volume, so check the label. "Sugar is often added to these beverages to improve the taste, so try to choose ones that are low in sugar," says Dawn Sugarman, a research psychologist at Harvard-affiliated McLean Hospital in the division of alcohol, drugs, and addiction.

• Avoid temptations. Keep alcohol out of your house. When you are invited to someone’s home, bring your non-alcoholic drinks with you.
• Create a support group. Let friends and family know about your intentions and encourage them to keep you accountable. Better yet, enlist someone to do the challenge with you.
• Use the Try Dry app. This free app helps you track your drinking, set personal goals, and offers motivational information like calories and money saved from not drinking. It’s aimed at cutting back on or cutting out alcohol, depending on your choices.
• Don’t give up. If you slip up, don't feel guilty. Just begin again the next day.

Check your feelings

Sugarman recommends people also use Dry January to reflect on their drinking habits. It’s common for people to lose their alcohol cravings and realize drinking need not occupy such an ample space in their lives. If this is you, consider continuing for another 30 days, or just embrace your new attitude toward drinking where it’s an occasional indulgence.

If you struggle during the month, or give up after a week or so, you may need extra help cutting back. An excellent resource is the Rethinking Drinking site created by the National Institute on Alcohol Abuse and Alcoholism (NIAAA). For the record, NIAAA recommends limiting alcohol to two daily drinks or less for men and no more than one drink a day for women.

Be aware of problems that might crop up

Dry January can reveal potential alcohol problems, including symptoms of alcohol withdrawal ranging from mild to serious, depending on how much you usually drink. Mild symptoms include anxiety, shaky hands, headache, nausea, vomiting, sweating, and insomnia. Severe symptoms often kick in within two or three days after you stop drinking. They can include hallucinations, delirium, racing heart rate, and fever. "If you suffer alcohol withdrawal symptoms at any time, you should seek immediate medical help," says Sugarman.

When faced with buying shoes, some people will be done in five minutes and be totally satisfied. For others, it’ll be a multiday process of reading reviews, comparing prices, consideration, and more consideration before making a decision.

Or not.

People can want to make a choice, but fear of making a bad one or of missing a better deal that might come gets in the way. The upcoming holiday gift-buying only ups the pressure.

“Making decisions is a taxing task,” says Dr. Soo Jeong Youn, clinical psychologist at Massachusetts General Hospital and assistant professor in the department of psychiatry at Harvard Medical School.

We’re doing it constantly, with what to wear and eat. It can also feel agonizing, even paralyzing, because sometimes we don’t know all the information, and so the brain fills in the gaps with worst-case scenarios, which does nothing to lower the stress.

Can we get better at making decisions? The short answer is yes. It takes some organization, but also a mindset shift in which we accept that there is no ideal choice. But before that, it helps to look a little more at why decision-making can be so difficult.

Knowing what to expect

Not all decisions cause the same stress. Big ones, like changing jobs or buying a house, take consideration, which we expect. Everyday choices, like our morning coffee order or groceries, are often automatic. And usually, the prefrontal cortex is in control. That’s the part of the brain behind the forehead, handling executive functioning skills — a term, Youn says, which tries to capture the complexity behind thinking. The prefrontal cortex processes information from the entire brain and puts it together to make a choice.

It’s the midlevel decisions — the new bike, winter jacket, toaster, or shoes — that become troublesome. They’re not huge purchases, but since we don’t make them regularly, we can spend more time weighing cost versus benefit. “We haven’t engaged in the thinking process,” Youn says.

Instead of the prefrontal cortex, the limbic system takes over. It’s the fight-or-flight response part of the brain, and there’s no careful weighing of factors. The goal is simple: survival, and it can cause us to make a less-than-optimal choice just to end the decision-making process — or to avoid the situation altogether by doing nothing, she says.

That’s not necessarily our goal. We want to make a good choice, but often there’s more in play, namely expectations. It’s tied into how we get viewed and what our worth is. If it’s a present, we worry about whether it expresses our feelings appropriately. As Youn says, “That decision is not just about that decision.”

And underlying it all is the fear and regret that you picked the wrong thing.

But to that, Youn poses a question: Wrong for what?

Get your focus

Often, people go into a purchase without being clear on what they need. Is the item for warmth, durability, exercise, style? Does it have to have special features? Do you need it quickly? Establishing a scope gives us something to refer back to and ask, “Does this fit with my purpose?” Conversely, with no parameters, we spend more time and angst making decisions, and sometimes keep looking under the belief that the “perfect” thing exists.

“We want this to check off all the boxes, even though we haven’t defined what all the boxes are,” she says.

For some people, the difficulty is in making the decision, but once done, the stress is over. But for others, the worry continues: the limbic system is still activated, and that’s when regret or buyer’s remorse comes in. Youn says to treat it like that song in your head that won’t go away, and give it some attention.

Examine the worry and name it. If you’re wondering about missing out on something, ask, “Why is that important?” And then with every assumption ask, “And then what would happen?” The process might reduce the magnitude of how much something actually matters. If that doesn’t work and you’re worried that you missed out on a better deal, then do some research. Whatever the result, even if it wasn’t in your favor, take it as a lesson that you can use for the next decision.

Lean on routines

New decisions take energy. That’s why routines are helpful — they remove the uncertainty of what to do in the morning or how to get to work. When possible, Youn says, use previous knowledge instead of constantly reinventing the wheel. If you like a pair of sneakers, there’s no problem with rebuying them if your needs haven’t changed.

If they have, just re-examine the new components, not the stuff you already know. And if you feel like you’re getting stuck in the evaluation process, ask yourself, “Is this worth my time?” The question creates a pause, brings you back into the moment, and allows you to decide how you want to proceed.

More research won’t help with decision-making or decision regret

It helps to realize that when we do our research, there comes a point where we’ve seen everything. In fact, more information becomes overload. What helps is to shrink down options as soon as possible. Maybe start with 10, but quickly get to five, then three, and finally two to compare before picking the winner. What can also help is setting the timer on your phone and giving yourself a certain number of minutes to make a choice. Sometimes that self-imposed deadline can keep us on track, and we can move on to the next decision.

But there can always be a nagging feeling that there’s more to know. In reality there isn’t, and actually we can’t know everything and don’t have to know everything — and that’s all right. As Youn says, “It’s an illusion.”

Various versions of low-carbohydrate diets have been popular for many years. The details of what is allowed and what is not vary quite a bit, and the amount of carbohydrates also differs. Too often these diets contain plates piled high with bacon, meat, eggs, and cheese. Due to the high saturated fat content in these diets, doctors and nutritionists worry about their potential adverse effect on cardiovascular disease.

The American Heart Association recommends aiming for about 13 grams of saturated fat, which is about 6% of 2,000 calorie diet. Recently, a new study published in the American Journal of Clinical Nutrition suggests that at least in the short term a low carb diet with a higher amount of saturated fat might still be heart-healthy. But is it that simple? Let’s take a look at what this randomized diet trial did and what the results really mean.

What did the study actually involve?

The 164 participants in this study were all considered overweight or obese, and had just finished a weight loss trial to lose 12% of their body weight. They were randomly assigned to one of three diets containing different proportions of carbohydrates and fat. Protein content was kept the same (at 20% calories) for everyone. They were not planning to lose any more weight.

The three diets were:

• Low carbohydrates (20%), high fat (60%), saturated fat comprising 21% of calories: this resembles a typical low-carbohydrate diet and has much higher saturated fat than recommended.
• Moderate carbohydrate (40%), moderate fat (40%), saturated fat comprising 14% of calories: this is not far from the typical American diet of 50% carbohydrates and 33% fat, and it is quite similar to a typical Mediterranean diet, which is slightly lower in carbohydrates and higher in fat than an American diet.
• High carbohydrate (60%), low fat (20%), saturated fat comprising 7% of calories: this meets the recommendation of the Dietary Guidelines for Americans and is a typical high-carbohydrate diet, including a lot of grains, starchy vegetables, and fruits or juices.

The study participants received food prepared for them for 20 weeks. They had their blood measured for a number of risk factors of cardiovascular disease, and a lipoprotein insulin resistance (LPIR) score was calculated using a number of blood markers to reflect the risk for cardiovascular disease. (LPIR is a score that measures both insulin resistance and abnormal blood cholesterol all in one number, and it is used for research purposes.)

The researchers found that at the end of eating these diets for five months, the participants in each of the three groups had similar values of cardiovascular disease markers, such as the LIPR score an and cholesterol blood levels.

What were the participants actually eating?

Alas, those who were eating the low-carbohydrate diet were not piling up their plate with steak and bacon, and those eating the high-carbohydrate diets were not drinking unlimited soda. All three diets were high in plant foods and low in highly processed foods (it is easier to stick to a diet when all the food is prepared for you). Even the low-carbohydrate group was eating lentils, a good amount of vegetables, and quite a bit of nuts.

Even the two diets with higher than recommended amounts of saturated fats also were high in the healthy poly- and monounsaturated fats as well. For example, the diets contained a combination of higher amounts of healthy (salmon) and a small amount of unhealthy (sausage) choices. In addition, fiber intake (at about 22 grams/day) was slightly higher than the average American intake (18 grams/day). Overall, except for saturated fat being higher than recommended, the diet as a whole was quite healthy.

What is the take-home message?

Striving for a plant-based diet with saturated fat being limited to 7% of total calories remains an ideal goal. But for people who choose a low carb, high fat diet to jump start weight loss, keeping saturated fat this low even for a few months is challenging. This study at least provides some evidence that higher amounts of saturated fat in the context of a healthy diet do not seem to adversely affect certain cardiovascular risk markers in the short term. How it would affect actual disease — such as heart attack, stroke, and diabetes — in the long run is unknown. However, there is ample evidence showing that a diet that consists of healthy foods and has moderate amounts of carbohydrate and fat can lower the risk of these diseases.

Preventing diseases is a long-term process; a healthy diet must not only be effective, but it should also be flexible enough for people to stick to in the long run. Could a diet with lower amounts of healthy carbohydrates and ample healthy fats with a bit more saturated fat be healthy enough? As the researchers state, we need long-term testing to help answer the question.