Cholesterol

Cholesterol isn't entirely the health villain it's made out to be, its name darkly linked to heart attack, stroke, and other types of cardiovascular disease. Our bodies need cholesterol, which is a type of lipid (another name for fat) to make cell membranes, key hormones like testosterone and estrogen, the bile acids needed to digest and absorb fats, and vitamin D. Cholesterol is so important to the body that the liver and intestines make it from scratch.

What is "bad" about cholesterol isn't the substance itself — in fact, we can't live without it — but how much of it is in the bloodstream.

The body packages cholesterol in two main particles: low-density lipoprotein (LDL), the so-called bad cholesterol, and high-density lipoprotein (HDL), the so-called good cholesterol. Too much LDL in the bloodstream helps create the harmful cholesterol-filled plaques that grow inside arteries. Such plaques are responsible for angina (chest pain with exertion or stress), heart attacks, and most types of stroke.

What causes a person's LDL level to be high? Most of the time diet is the key culprit. Eating foods rich in saturated fats, trans fats, and easily digested carbohydrates boost LDL. Genes are sometimes at the root of high cholesterol, and some medications can boost LDL.

If you have high cholesterol, making changes in your diet can help bring it down into the healthy range. Exercise can help boost the level of protective HDL. Several types of medication, notably the family of drugs known as statins, can powerfully lower LDL. Depending on your cardiovascular health, your doctor may recommend taking a statin.

Cholesterol Articles

Looking for a mellow form of exercise? Try tai chi

Tai chi is a slow, flowing form of exercise that’s sometimes described as “meditation in motion.“ It can be a good gateway exercise for people who cannot or will not engage in more conventional types of exercise. Tai chi may help lower cholesterol levels, reduce blood pressure, and dampen inflammation, all of which are linked to better heart health. Tai chi may also be a promising addition to cardiac rehabilitation. More »

Understanding acute and chronic inflammation

Inflammation plays an essential role in healing and injury repair and is an integral part of the way a person’s immune system keeps the body safe and healthy. Some inflammation is good. Too much is often harmful. The goal is to recognize when inflammation is merely doing its job, and when it can potentially cause problems. More »

Keeping tabs on triglycerides

Lowering LDL cholesterol levels is an important way to reduce the risk of heart disease, heart attack, and stroke. But people also should monitor their triglycerides—the most common type of fat in the body. In some cases, medications help lower high levels, but lifestyle changes are the preferred method, such as eating healthier carbohydrates, curbing alcohol, losing weight, and increasing exercise. (Locked) More »

Understanding triglycerides

Triglycerides are the most common form of fat both in food and in the bloodstream. Growing evidence suggests that above-normal triglyceride levels can raise the risk of cardiovascular disease. More »

What’s the best time of day to take your medication?

When it comes to the best time of day to take medication, there isn’t a one-size-fits-all approach. It depends on the particular medication, a person’s health conditions, and other drugs being taken. For example, some pills are best taken in the morning, before breakfast, to promote better absorption. Others may need to be taken at bedtime because they may cause drowsiness. One should always ask about the best time of day to take a medication when it’s first prescribed. (Locked) More »

Don’t stress about heart health

When stress becomes more frequent or lingers—what’s known as chronic stress—it can cause excessive strain throughout the body and lead to higher inflammation, higher blood pressure, elevated cholesterol, and sleep disturbances—all factors that contribute to a higher risk for heart disease, heart attacks, and strokes. By practicing certain behaviors, people can train their brain and body not to let chronic stress control them. (Locked) More »

Low LDL and stroke: A closer look

Bleeding strokes, which account for about 13% of strokes, may be more common among the small percentage of people who have naturally low levels of LDL cholesterol, which are usually due to genetics, diet, or illness. But these findings are not relevant to people who take statins or other cholesterol-lowering drugs to lower their LDL. Low LDL helps prevent heart attacks and ischemic strokes, which are far more common than bleeding strokes. (Locked) More »

2020 vision: Cardiology trends to watch

Several new cardiology technologies are gaining traction, including digital stethoscopes, handheld ultrasound devices, and a cuffless blood pressure monitor. Designed for use with smartphones or tablets, they hold the promise of faster, non-invasive diagnoses of various heart-related conditions. A lab-on-a-chip may help researchers find better anti-clotting medications, and a drug that lowers stubbornly high cholesterol with just two injections per year is being tested. (Locked) More »