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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.

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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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.

Prostatitis gets little press, but it’s a common inflammatory condition that accounts for more than two million visits to doctors’ offices in the United States every year. Some cases are caused by bacteria that can be readily detected and treated with antibiotics. But more than 90% of the time, prostatitis symptoms (which can include painful urination and ejaculation, pelvic pain, and sexual dysfunction) have no obvious cause. This is called chronic nonbacterial prostatitis/chronic pelvic pain syndrome, or CP/CPPS. The treatments are varied. Doctors sometimes start with antibiotics if the condition was preceded by a urinary tract infection. They may also recommend anti-inflammatory painkillers, stress-reduction techniques, pelvic floor exercises, and sometimes drugs such as alpha blockers, which relax tight muscles in the prostate and bladder.

Another treatment that can work for some men is acupuncture. A 2018 review article of three published studies found that acupuncture has the potential to reduce CP/CPPS symptoms without the side effects associated with drug treatments.

Now, results from a newly published clinical trial show symptom reductions from acupuncture are long-lasting. Published in the prestigious journal Annals of Internal Medicine, the findings provide encouraging news for CP/CPPS sufferers.

Acupuncture involves inserting single-use needles into “acupoints” at various locations in the body, and then manipulating them manually or with heat or electrical stimulation. During the study, researchers at ten institutions in China assigned 440 men with prostatitis to receive 20 sessions (across eight weeks) of either real acupuncture, or a control sham procedure wherein the needles are inserted away from traditional acupoints.

The researchers were medical doctors, but the treatments were administered by certified acupuncturists with five years of undergraduate education and at least two years of clinical experience. Treatment benefits were assessed using the National Institutes of Health Chronic Prostatitis Symptom Index (NIH-CPSI), which assigns scores for pain, urinary function, and quality of life. The men were tracked for 24 weeks after the eight weeks of treatment sessions.

By week eight, just over 60% of men in the acupuncture group were reporting significant symptom improvements (with the exception of sexual dysfunction), compared to 37% of the sham-treated men. Importantly, these differences were little changed by week 32, indicating that the benefits of acupuncture were holding steady months after the treatments were initiated.

Precisely how acupuncture relieves prostatitis symptoms is unclear. The authors of the study point to several possibilities, including that stimulation at acupoints promotes the release of naturally occurring opioid-like chemicals (enkephalins, endorphins, and dynorphins) with pain-killing properties. Acupuncture may also have anti-inflammatory effects, and the experience of being treated can also have psychological benefits that result in symptom improvements, the authors speculated.

“The research on prostatitis CPPS has been very sparse and scarce, and often with disappointing results, so this article from practitioners who are also experts in acupuncture is very welcome,” said Dr. Marc Garnick, the Gorman Brothers Professor of Medicine at Harvard Medical School and Beth Israel Deaconess Medical Center, editor of the Harvard Health Publishing Annual Report on Prostate Diseases, and editor in chief of HarvardProstateKnowledge.org. “The possible causes of prostatitis are many and not fully understood. Furthermore, we do not fully understand how and why interventions that may occasionally aid in relieving troublesome symptoms work. If one is to avail themselves of acupuncture, my advice is to make certain that the acupuncturist that you select is well trained and qualified to perform this potentially important intervention.”

Have family or friends in assisted living facilities? Finding the right gift can be complicated. Health issues may rule out some gifts: cross off sweets or chocolates for those who need to keep blood sugar under control. There isn’t much space for extra belongings in the apartment or room. In some cases, your giftee’s physical or mental capabilities (or both) are declining.

"Any gift you give will probably be appreciated," says Dr. Suzanne Salamon, associate chief of gerontology at Harvard-affiliated Beth Israel Deaconess Medical Center. "But it helps if it’s something the person can really use and will enjoy. Tailor it to their particular ailments, needs, and interests." Below is a roundup that can help you select a great gift for the holidays — or any other occasion.

Gifts for social engagement

"Many people feel lonely and isolated in assisted living facilities. Keeping loved ones socially connected combats that, and also helps ward off chronic disease and cognitive decline," Salamon notes. Gifts that may fit the bill include:

• A simple phone. The easier a phone is to operate, the more likely your loved one will be able to use it. That could be a landline phone with large, easy-to-read numbers ($25 and up), a flip phone ($35 and up), or a smartphone with few buttons and apps ($50 and up). Remember that cell phones come with monthly service costs; prices depend on the carrier.
• A smart speaker. If phone use is too hard for your loved one, consider a smart speaker ($20 and up) that can be programmed to dial important numbers (like yours). Commands can be said aloud at any time to make a call. Check if your loved has internet service, which is needed for smart speaker use.
• A photo book. A loose-leaf photo album (less than $20) or easily created photo book ($10 and more) with recent photos of family and friends may be a warm reminder of connections, or can be a gift to share with others in the assisted living facility. That social interaction is important for health. Plus, it will make the person feel good to see all of those photos of people who love them.

Gifts to aid independence

Health problems can make simple activities challenging. These gifts can give your loved one a little independence.

• Adaptive tools. Your loved one may be able to take back some control of dressing with a long-handled shoehorn, a button hook, or a zipper pull (less than $10 each).
• A magnifying glass. Especially handy for those with impaired vision (and who hasn’t misplaced reading glasses?), having a magnifying glass ($5 and up) is handy for reading or seeing small objects. For a nice upgrade, make it a lighted magnifying glass ($15).
• Handwriting aids. Hand arthritis or neurodegenerative conditions (such as Parkinson’s disease) make writing difficult. Ergonomically-shaped adaptive pens ($10 and up) can help your loved one jot down information or thoughts.

Gifts for sharper thinking skills

"Challenging your brain or learning new information promotes new brain cell connections, which help protect and maintain cognition," Dr. Salamon says. Give your loved one something that will make the process easy and fun, such as the following:

• A daily trivia calendar. (About $15)
• Large-print nonfiction or fiction books. ($5 and up). Audio selections are enjoyable, too.
• Large-print books of brain games and puzzles. ($5 and up)
• A print subscription to a health publication, such as the Harvard Health Letter ($24).

Gifts to ease health issues

A well-chosen gift can bring comfort and help ease health issues. Try addressing someone’s aches and pains with gifts such as:

• A microwavable heat wrap ($15 and up).
• A handheld massager ($5 and up).

Or you could address circulatory problems that make people feel cold or increase the risk for blood clots in the legs. Ideas include:

• A soft fleece blanket ($10 and up).
• Warm slippers with slip-resistant soles ($20 and up).
• Brightly patterned compression stockings with fun designs ($15 and up). Be sure to check the size so they aren’t too small for your loved one.

Gifts to track health

Even though assisted living facility staffers monitor residents’ health, your loved one may find it useful to have one of the following gifts:

• A blood pressure monitor ($30 and up). Look for one with a cuff that goes around the upper arm; inflates automatically; has a lighted background with large numbers; and is certified by the Association for the Advancement of Medical Instrumentation, the British Hypertension Society, or the European Society of Hypertension.
• A digital "stick" thermometer ($10 and up). The right one will be large and easy to hold, with a lighted background and large numbers.

Not quite right?

Keep thinking. A nice, warm fleece sweater ($20 and up)? Extra reading glasses to place in favorite nooks ($15 and up)? If none of these ideas is right, consider giving a healthy treat. A great choice right now is fresh citrus (send a box for $30 and up). "Avoid grapefruit, which can interfere with certain medications," Dr. Salamon advises, "but oranges or tangerines are sweet and rich in vitamin C, which supports a healthy immune system. And that’s a great gift."

Some things are not debatable. Rain falls from the sky. Elevators go up and down. Orange traffic cones are orange. But because we interpret the world through our experiences, a lot isn’t so definitive.

The boss might say, “Good job,” and we wonder why they didn’t say, “Great job.” We see someone looking in our direction and they seem angry, so we believe that they’re mad at us, and no other explanation makes sense.

What’s happening is that we’re distorting our experience, jumping to conclusions, mind reading, and going to the worst-case scenario. When we do this, we shrink our successes and maximize our “failures,” and because it can be an automatic process, it’s hard to tell when it’s happening. “You don’t know you’re wearing magnifying glasses,” says Dr. Luana Marques, associate professor of psychology at Harvard Medical School.

So what can you do to see things more clearly and with a more balanced perspective? It takes practice and a willingness to tolerate discomfort, but as with addressing any problem, it starts with awareness.

What’s happening when we magnify failures and jump to negative conclusions?

We like to process information quickly, and we use filters to help do that. If we believe, “I’m no good,” all words and behaviors that support that contention just make everything easier.

“The brain doesn’t want to spend energy trying to fight that,” Marques says. And the brain responds depending on the distortion. If something causes anxiety, say from a curious look or comment, the limbic system is activated and we’re in fight-or-flight mode, hyper-focused on the threat, not thinking creatively or considering alternative, less threatening options.

But sometimes, there’s no threat in play. We’re just thinking, probably overthinking, when we question our abilities and minimize our accomplishments.

So what can you do about it?

Label the type of thinking distortion

It helps to define our distortions, the common ones being:

• Catastrophizing: Taking a small incident and going to the worst-case scenario.
• Black-and-white thinking: Seeing only all-or-nothing possibilities.
• Jumping to conclusions: Assuming what will happen rather than waiting to see what will actually happen.
• Mind reading: Assuming what someone is thinking without much evidence.

When you label it, you can better understand and recognize what your go-to distortion is, because “we tend to do one more than another,” Marques says.

After that, it helps to take your emotional temperature by asking: Am I stressed? Am I sweating? Is my heart pounding or my breathing shallow? It brings you more into the moment and it allows you to think about what you were doing that brought on the response, such as, “I was trying to guess the outcome.” It’s another way to pinpoint the distortion you tend to favor, she says.

Challenge the distortion

Whichever distortion it is, you want to examine your assumption by looking for other evidence. If you question your boss’s reaction to you, ask yourself: What does my boss really say? What does this person say about other people? Have I received raises and promotions? Am I given good projects?

An easy trap with distortions is that they’re plausible. A person who is mad at me would give me a look. A person who hated me wouldn’t text me back. Maybe so, but think of five other possible explanations, Marques says. This exercise engages the prefrontal cortex, which takes you out of the fight-or-flight mode and expands your thinking. You’re then problem-solving and not solely keyed on one option.

You also want to ask an essential question: is this thinking helpful? You might realize that all your thinking/wondering/worrying does is make you anxious. Gaining that presence might be enough to get you off the path of distorted thinking. “Asking and answering the question about your thinking pauses the brain, and you potentially see the world differently,” she says.

Being balanced and kind to ourselves

As you examine and attempt to control your distortions, be mindful of how you treat yourself. Self-criticism is a really easy trap to fall into, but try talking to yourself as you would a friend. Better yet, imagine you’re speaking to a child. Your language would be considerate, supportive, and you wouldn’t use words such as “stupid” or “dumb.” This approach also shifts you into the detached, third person. “You get out of your head,” Marques says. “We’re cleaning our magnifying glasses a little bit.”

Lastly, realize that you’re not looking to switch your attitude from “I’m unworthy” to “I’m super-great.” That’s just trading one extreme for another. All you want is to counterbalance your distortion, then let it go. Countering thinking distortions is a lot like meditation, where you practice acknowledging your thoughts without getting hooked onto them.  “You don’t have to magnify or minimize.” Marques says.

How well are you protecting yourself against heart disease, the nation’s leading cause of death? A check of five important numbers can give you a good idea.

“For my patients, I typically look at their blood pressure, blood sugar, LDL cholesterol and triglycerides values, and their waist circumference,” says Harvard Heart Letter editor-in-chief Dr. Deepak L. Bhatt, who directs interventional cardiovascular programs at Harvard-affiliated Brigham and Women’s Hospital. Those values provide a picture of a person’s overall health and, more specifically, what factors they may need to address to lower their chance of a heart attack or stroke, he says.

Below are the ideal values for each measurement, along with why they’re important and targeted advice for improving them. Universal suggestions for improving all five measurements appear at the very end.

How do your heart health numbers stack up?

While the ideal values are good goals for most people, your doctor may recommend different targets based on your age or other health conditions.

Blood pressure

Less than 120/80 mm Hg

Blood pressure readings tell you the force of blood pushing against your arteries when your heart contracts (systolic blood pressure, the first number) and relaxes (diastolic blood pressure, the second number). Your blood pressure reflects how hard your heart is working (when you’re resting or exercising, for example) and the condition of your blood vessels. Narrowed, inflexible arteries cause blood pressure to rise.

Why it matters to heart health: High blood pressure accelerates damage to blood vessels, encouraging a buildup of fatty plaque (atherosclerosis). This sets the stage for a heart attack. High blood pressure forces the heart’s main pumping chamber to enlarge, which can lead to heart failure. Finally, high blood pressure raises the risk of strokes due to a blocked or burst blood vessel in the brain.

What helps: A diet rich in potassium (found in many vegetables, fruits, and beans) and low in sodium (found in excess in many processed and restaurant foods); minimizing alcohol.

LDL cholesterol

Less than 100 mg/dL

A cholesterol test (or lipid profile) shows many numbers. Doctors are usually most concerned about low-density lipoprotein (LDL) cholesterol, particles that makes up about two-thirds of the cholesterol in the blood.

Why it matters to heart health: Excess LDL particles lodge inside artery walls. Once there, they are engulfed by white blood cells, forming fat-laden foam cells that make up atherosclerosis.

What helps: Limiting saturated fat (found in meat, dairy, and eggs) and replacing those lost calories with unsaturated fat (found in nuts, seeds, and vegetable oils).

Triglycerides

Less than 150 mg/dL

Perhaps less well-known than cholesterol, triglycerides are the most common form of fat in the bloodstream. Derived from food, these molecules provide energy for your body. But excess calories, alcohol, and sugar the body can’t use are turned into triglycerides and stored in fat cells.

Why it matters to heart health: Like high LDL cholesterol, elevated triglyceride values have been linked to a higher risk of heart attack and stroke.

What helps: Limiting foods that are high in unhealthy fats, sugar, or both; eating foods rich in omega-3 fatty acids (such as fish); avoiding alcohol.

Blood sugar

Less than 100 mg/dL

High blood sugar defines the diagnosis of diabetes. Type 2 diabetes is most common. It occurs when the body develops insulin resistance (insulin enables cells to take in sugar) and does not produce enough insulin to overcome the resistance.

Why it matters to heart health: High blood sugar levels damage blood vessel walls and cause sugar (glucose) to attach to LDL. This makes LDL more likely to oxidize — another factor that promotes atherosclerosis. Excess sugar in the blood also makes cell fragments called platelets stickier so they’re more likely to form clots, which can trigger a heart attack or stroke.

What helps: Avoiding sugary beverages and foods high in sugar; eating whole, unprocessed grains instead of foods made with refined grains (white flour, white rice).

Waist circumference

Whichever number is lower:

Less than half your height in inches

OR

Women: Less than 35 inches

Men: Less than 40 inches

Measure your waist around your bare abdomen just above your navel (belly button). A big belly — what doctors call abdominal or visceral obesity — usually means fat surrounding internal organs.

Why it matters to heart health: Visceral fat secretes hormones and other factors that encourage inflammation, which triggers the release of white blood cells involved in atherosclerosis.

What helps: Consuming fewer calories, especially those from highly processed foods full of sugar, salt, and unhealthy types of fat.

Universal advice to improve all five measures of heart health

If one or more of your numbers is above ideal levels, you’re far from alone. Most Americans are overweight or obese and have bigger-than-healthy bellies. Excess weight and waist circumference affect blood pressure, LDL cholesterol, triglycerides, and blood sugar. Eating a healthy, plant-based diet can help. Regular exercise also helps: aim for at least 30 minutes of moderate-intensity exercise like brisk walking most days. Other lifestyle habits that can lower your heart disease risk include getting seven to eight hours of sleep nightly and managing your stress level.

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.

When I was on the junior varsity basketball team in high school, I wasn't surprised when I developed a case of itchy, flaky athlete's foot. After all, I was an "athlete," so I assumed it was a sign of dedication and hard work.

I was shocked when my mother told me the truth: it was due to poor foot hygiene, not my dribbling skills.

Fast-forward almost four decades, and I’m much more diligent about skin care. Still, some skin issues plague me at times, like they do many men. Here is a look at two common problems and solutions.

Dry skin

Symptoms of dry skin include scaly patches (with or without redness), itching, and overall dryness. You can get dry skin year-round — from the heavy heat of summer to the bitter cold of winter. Sun exposure damages skin, leaving it thinner and less likely to hold in moisture over time. Also, aging skin produces less of the natural oils that keep skin lubricated.

Treatment. The first line of defense is a moisturizer that softens and smooths skin with water and lipids (fats). Some moisturizers attract water to the skin and seal it in. Others prevent moisture loss by coating skin with a thick, impermeable layer.

• Petroleum jelly. This waxy, greasy substance stops water loss without clogging pores. It can be used by itself but is also an ingredient in many moisturizers and ointments. Because petroleum jelly doesn’t contain water, it’s best used while the skin is still damp after bathing to seal in moisture.
• Mineral oil. Mineral oil has the same effect but without a greasy feeling. It also should be used while skin is damp.
• Moisturizing lotions and creams. These products contain both water and oils. They’re less greasy and more cosmetically appealing than petroleum jelly or oils. Look for moisturizers with at least one of the following ingredients: glycerin, urea, pyroglutamic acid, sorbitol, lactic acid, lactate salts, or alpha hydroxy acids.

Prevention. Try a few changes to help prevent dry skin:

• Add moisture to the air with a humidifier or a pan of water set atop the radiator.
• In the shower or bath, use lukewarm water (hot water can dry the skin by stripping it of natural oils).
• Choose nondrying soaps with no abrasives or irritants. Super-fatted soaps or cleansing bars are less drying than regular, liquid, or antibacterial soaps.
• To retain the water your skin absorbs while showering or bathing, apply jelly, oil, or moisturizer immediately afterward.

Athlete’s foot

Athlete’s foot is caused by dermatophytes, a group of fungi on the surface of the skin. Tell-tale signs include intense itching; cracked, blistered, or peeling areas of skin, especially between the toes; and redness and scaling on the soles. Dermatophytes thrive in warm, moist environments like pools, showers, and locker rooms where people walk with bare feet. The warm, moist environment of sweaty socks and shoes encourages them to grow.

Treatment. First, try an over-the-counter antifungal ointment, cream, or powder, such as clotrimazole (Lotrimin AF, Mycelex, generic), terbinafine (Lamisil AT, Silka,), or miconazole (Lotrimin AF spray, Micatin). It can take weeks for an infection to improve, and recurrences are common. If symptoms don't improve after several weeks, consult a doctor, who may prescribe antifungal pills.

Prevention. Keeping feet clean and dry is the best way to ward off athlete’s foot. Also, do the following:

• Wash your feet well every day, and wear a clean pair of socks after your bath or shower.
• Take time to dry your feet thoroughly (including each toe and especially the web space between the toes) after you bathe, shower, or swim.
• Wear flip-flops or sandals around public pools and in gym locker rooms and showers.
• Wear moisture-wicking socks that absorb sweat.
• Don’t wear the same shoes two days in a row. Give shoes a 24-hour break between wearings to air out and dry.

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.

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