Healthy aging and longevity Archive

With summer's approach come plans for travel, including flying long distances. But the prospect of a long flight often raises health concerns. Especially in passengers who are older or have certain conditions, air travel and the related stress can have an impact on health. Here are a few trouble areas and some precautions you can take.

Deep-vein thrombosis (DVT). Not all experts agree on an association between DVT (blood clots in the legs) and air travel. Symptoms may not occur for several days, so it's difficult to establish a cause-and-effect relationship. If there is one, it's likely due to prolonged inactivity. Limited airline space can discourage moving about. Dry cabin air may also increase the risk of DVT.

Fantasies can help rev up your sex life. Myths, on the other hand, can stop desire dead in its tracks. Such myths aren't the legends from classical history. They're the stories we tell ourselves and each other to support the notion that older people shouldn't, can't, and wouldn't want to have sex. This type of myth, however, bears as little relationship to reality as do the fanciful sagas of ancient gods and goddesses. Here are some examples of the most popular sexual myths and the myth-busting truths.

1. The myth: Only the young are sexually attractive.

The culture we live in exalts youth. Turn on the TV or open a magazine and you'll be barraged with images of supple skin, firm flesh, and lustrous locks. But if your mirror is reflecting a different picture these days, you may feel like the party is going on without you.

Calcium is billed as the bone-building nutrient. But some experts argue that we should pay more attention to exercise and vitamin D.

Starting on your 51st birthday, current government guidelines say you're supposed to consume 1,200 milligrams (mg) of calcium daily. With advancing years, both men and women begin to experience a decline in the density of bones that makes them weaker and more likely to break. In essence, your bone becomes more porous, and calcium supposedly fills in the holes.

But the amount of calcium adults need continues to be debated. The critics say there's little evidence that high intake has more than a marginal effect on bone density and fracture prevention. They say exercise and reversing vitamin D deficiency are not promoted enough and are more important for bone health. Professor Walter Willett, chair of the nutrition department at the Harvard School of Public Health, is one of the leading lights in the critical camp.

Fear of catching COVID-19 may keep you away from doctors' offices and emergency rooms. Will that hurt or help your health?

For many people, it's a daily debate: Do you risk getting COVID-19 by venturing outside your home and being around others — even if you wear a mask, observe social distancing, and use hand sanitizer? Or do you play it safe and stay inside? The answer is complicated, especially when the reason for leaving home is health-related.

People are understandably concerned about catching COVID while making a medical visit. But avoiding medical treatment because of this kind of thinking can be dangerous, and it appears to be taking a deadly toll.

Put the focus on food quality and healthy lifestyle practices to attain a healthy weight.

Most people have been taught that losing weight is a matter of simple math. Cut calories — specifically 3,500 calories, and you'll lose a pound. But as it turns out, experts are learning that this decades-old strategy is actually pretty misguided.

"This idea of 'a calorie in and a calorie out' when it comes to weight loss is not only antiquated, it's just wrong," says Dr. Fatima Cody Stanford, an obesity specialist and assistant professor of medicine and pediatrics at Harvard Medical School.

Switch the type of walking in your routine to stay motivated and active.

Putting one foot in front of the other is a simple way to trigger a cascade of health benefits. Regular brisk walks help lower LDL (bad) cholesterol; control blood sugar; and reduce the risk for high blood pressure, heart disease, stroke, and diabetes. Brisk walks also strengthen muscles, burn calories, and lift mood.

Just one problem: some people find walking boring. Boredom may diminish your motivation and interest in exercising. Before that happens, mix up your regimen with different types of walking that maximize physical, mental, and emotional health benefits.

We don't yet have a vaccine to prevent COVID-19, but it's still important to get your regularly scheduled shots.

You're not alone if you're avoiding doctor visits because of concerns about COVID-19. But forgoing medical care means you may be skipping needed vaccinations. "That's a huge problem already. Possibly over a hundred million people the world over have missed their vaccinations because of the pandemic," says Dr. Shiv Pillai, an immunologist and professor of medicine at Harvard Medical School.

Going without vaccinations may increase your risk for illness, such as influenza. "We still are just as vulnerable to infection, and we need vaccines to be protected; COVID-19 doesn't change that," says Harvard Health Letter editor in chief Dr. Anthony Komaroff.

How can you protect yourself from both viruses?

With flu season here and the COVID-19 pandemic ongoing, what can people expect when these two illnesses meet?

It's anyone's guess.

"While we're in the midst of the COVID pandemic, there's a lot of uncertainty about what will happen when this collides with our yearly flu epidemic," says Dr. Mary Watson Montgomery, an infectious disease expert at Harvard-affiliated Brigham and Women's Hospital.

Research we're watching

People with prediabetes — a condition in which blood sugar is elevated but not high enough to be considered diabetes — often go undiagnosed. That may put them at higher risk of cardiovascular disease and even early death, according to an analysis of 129 studies published in the July 18, 2020, issue of The BMJ.

The analysis, which combined data on some 10 million people, found that prediabetes raised the risk of dying from cardiovascular disease by 15% and from any cause by 13% over a median follow-up period of about 10 years. The mortality risk was even higher in people with prediabetes who also had coronary artery disease: they had nearly a 40% increased risk of dying within a median follow-up period of just three years. The study authors suggest that finding and addressing more cases of prediabetes could lead to a lower risk of future cardiovascular disease.