Cholesterol Archive

People who take frequent saunas or hot baths may lower their risk of heart problems. But be cautious if you have low blood pressure.

Soaking in a bathtub or basking in a sauna can be a pleasant way to relax. Done on a regular basis, both habits may also help prevent heart attacks and strokes, according to several studies.

"The high temperatures in a warm tub or sauna cause your blood vessels to dilate, which lowers blood pressure," says Dr. Adolph Hutter, professor of medicine at Harvard Medical School. The volume of blood your heart pumps will also rise, especially in a hot tub. That's a result of the pressure of the water on the body, which increases the heart's workload, he explains.

Many provide links to published research about these heart -protecting drugs. Others mention personal beliefs about statins, some of which are inaccurate.

Statins are among the most frequently prescribed medications in the United States. These cholesterol-lowering drugs help reduce the risk of heart attacks and strokes, especially for people who've already had one of those life-threatening events. But many people stop taking their statins or don't take them as prescribed, a phenomenon doctors refer to as nonadherence.

Hoping to gain some insight into this trend, researchers analyzed 11,852 posts that mentioned statins on Twitter over a five-year period. About a quarter of Americans use Twitter, which is one of the most popular social media platforms. Although many of the tweets featured ads or financial market information, nearly half were related to health issues associated with statins. Of these, more than a third provided resource information, such as a link to a published study. About 20% included personal beliefs or attitudes about statins, which proved to be quite polarized. Some people described statins as lifesaving, while others referred to them as poisonous or deadly, according to the researchers, whose study was published June 25, 2020, in JAMA Network Open.

Ask the doctor

Q. My husband is reluctant to get tested for sleep apnea. But I'm pretty sure that he has it, and I'm concerned because I've heard that it can contribute to heart disease. How are these two conditions connected?

A. As you likely know already, people with sleep apnea may snore loudly and may also periodically gasp for breath throughout the night. These explosive snorts often wake up bed partners or roommates — although not necessarily the person with apnea.

Sesame seeds may be most familiar as a topping on bagels, burger buns, and breadsticks. The tiny, tear-shaped seeds have a nutty, slightly sweet flavor that's enhanced when they're baked or lightly toasted in a skillet. Most are off-white or tan, but you can also find black varieties, which are popular in Asian cuisine.

Sesame seeds contain lignans and phytosterols, plant compounds that may have cholesterol-lowering effects. They're also a decent source of calcium and magnesium, two minerals linked to better blood pressure control.

You may be familiar with the claims featured on packages of old-fashioned oatmeal, which note that "As part of a heart-healthy diet, the soluble fiber in oatmeal can help reduce cholesterol." Guess what? Back in 2008, the FDA also approved the equivalent health claim for barley products.

In fact, barley contains about three times as much fiber per serving as oats. Barley is particularly rich in a type of soluble fiber known as beta glucan, which is recognized for its cholesterol-lowering abilities. Barley is also a good or excellent source of several vitamins and minerals.

Many foods—from the everyday to the exotic—are rich in nutrients that may help keep your arteries clear and your heartbeat stable.

Start your day with a bowl of oatmeal and some orange wedges. Enjoy a hearty bowl of bean soup for lunch. Grab a handful of peanuts for a midafternoon snack. For dinner, tuck into some grilled salmon and spinach salad drizzled with extra-virgin olive oil.

This menu features common foods full of nutrients associated with better heart health.

Research we're watching

Thanks to marketing strategies that tout coconut oil as healthy, many people consider this solid, white fat a health food. But a new analysis confirms what nutrition experts have said for years: Coconut oil raises harmful LDL cholesterol (a well-known contributor to heart disease) much more than other vegetable oils.

The study, published online March 10, 2020, by the journal Circulation, pooled findings from 16 trials involving a total of 730 people. Most of the trials lasted one to two months and compared coconut oil consumption with that of other fats, including other vegetable oils such as soybean, safflower, canola, and olive oils. Compared with these vegetable oils, coconut oil raised LDL cholesterol by 10 points, on average. An editorial accompanying the study states "In culinary practice, coconut oil should not be used as a regular cooking oil, although it can be used sparingly for flavor or texture."

Research we're watching

Coenzyme Q₁₀ (CoQ₁₀) is a vitamin-like substance made naturally by the body that's needed for energy production within muscle cells. It's also sold as a dietary supplement and touted for its ability to prevent muscle-related side effects linked to cholesterol-lowering statins. But a new review finds no evidence for that alleged benefit.

Researchers combed through 431 published reports involving statins and CoQ₁₀. They included just seven studies that met specific criteria, which included studies that compared CoQ₁₀ to a placebo in adults who reported muscle pain while taking statins. (Around 10% of people taking statins report muscle aches or pains, although the true incidence of this problem isn't entirely clear.)

In the journals

Cholesterol-lowering statins and blood pressure drugs can improve heart health, but you still need to follow heart-healthy habits. That's the conclusion of a study published online Feb. 5, 2020, by the Journal of the American Heart Association, which found many people forgo healthy habits after they begin taking these medications.

Researchers in Finland identified 41,225 people who were free of cardiovascular disease. They collected such health data as body mass index, physical activity, alcohol intake, smoking status, and whether the people took statins or blood pressure drugs. Updated information was gathered from surveys every four years over a 14-year period.

The results reveal only limited information about your risk for abnormally high cholesterol or harmful blood clots.

About 30 million Americans have used direct-to-consumer genetic tests such as 23andMe and Ancestry. While some are simply curious about their ethnic heritage, many pay extra to learn about their propensity for certain diseases and conditions. But can the results tell you anything useful about your odds of developing heart disease, the nation's leading killer?

When it comes to coronary artery disease — by far the most common form of heart disease — the answer is maybe, says Dr. Pradeep Natarajan, director of preventive cardiology at Harvard-affiliated Massachusetts General Hospital. "Genetics are just one aspect of a person's risk. Lifestyle habits such as smoking, diet, and exercise play a bigger role," he says.