Cholesterol Archive

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.

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.

Here's what the numbers mean — and strategies to lower your cholesterol if it's too high.

For some women who've had normal cholesterol readings all their lives, that changes at menopause. "Going through menopause often results in lipid and cholesterol changes for the worse," says Dr. Samia Mora, an associate professor of medicine at Harvard Medical School and a specialist in cardiovascular medicine the Brigham and Women's Hospital. Drops in the female hormone, estrogen, are associated with a rise in total cholesterol levels due to higher amounts of low-density lipoprotein (LDL), the "bad" cholesterol, and another blood lipid (fat) known as triglyceride. Over time this can raise heart risks, which is a reason for concern, as cardiovascular disease is the No. 1 cause of death in postmenopausal women, says Dr. Mora.

"So, it's especially important to track the numbers in perimenopause and the early years after menopause, as LDL cholesterol and total cholesterol tend to increase," she says.

These are the most effective ways to protect yourself.

Here are some alarming statistics about heart attacks:

• Every 40 seconds, someone in the United States has a heart attack.
• Every year, about 805,000 Americans have heart attacks, 75% of which are first-time attacks.
• The average age of a first heart attack among men: 65.

However, the most troubling fact about heart attacks is that many people don't take steps to protect themselves, says Dr. Deepak L. Bhatt, executive director of interventional cardiovascular programs at Harvard-affiliated Brigham and Women's Hospital Heart & Vascular Center. "Reducing your risk of cardiovascular disease is the best way to guard against heart attacks," he says. "There are simple ways to do this, but unfortunately, many people still don't follow them as they should."

Here's a look at five ways you can protect yourself from cardiovascular disease, and thus possible heart attacks, and avoid being another statistic.

You can begin to reduce your "bad" LDL cholesterol naturally by making a few simple changes in your diet.

If your cholesterol is creeping upward, your doctor has probably told you that diet and exercise—the traditional cornerstones of heart health—could help to bring it down. And if you'd prefer to make just one change at a time to lower your cholesterol naturally, you might want to begin with your diet. A major analysis of several controlled trials involving hundreds of men and women found that dietary changes reduced LDL and total cholesterol while exercise alone had no effect on either. (However, adding aerobic exercise did enhance the lipid-lowering effects of a heart-healthy diet.)

Trans fats and saturated fats can raise LDL cholesterol levels. A diet rich in unsaturated fats, whole grains, and fruits and vegetables can lower them.

Among all the grains, oats appear to be the most effective when it comes to lowering cholesterol. In fact, back in 1997, oatmeal was granted the first food-specific health claim permission by the FDA, based on research showing that soluble fiber from oats lowers the risk of heart disease.

Soluble fiber, which dissolves in water, forms a gel in the intestines. This gel traps some of the cholesterol in your body, so it's eliminated as waste instead of entering your arteries. Some evidence also suggests that eating oats helps regulate blood sugar levels and helps you feel full.