Lowering Cholesterol Without Drugs: What Lifestyle Can Do and When Statins Still Matter
The old version of this post said that a low-cholesterol diet can lower cholesterol “by as much as 29 percent in one month,” that this is as effective as statins, and that eating low-cholesterol, high-fiber foods can cut it by seven percent. It is true that lifestyle can lower cholesterol, but those figures need context, and I could not verify the seven percent at all, so I have rewritten the post.
Can diet really match a statin?
In one study, yes, but under tight conditions. In a 2003 trial in JAMA, 46 adults with high cholesterol followed one of three plans for four weeks. A diet rich in plant sterols, soy protein, viscous fiber and almonds lowered LDL by 28.6 percent, compared with 30.9 percent for the statin lovastatin (20 mg a day) and 8.0 percent for a control diet. The old post’s “29 percent in one month” comes from this kind of trial. But that diet is demanding, and later studies in everyday life found smaller drops, around 13 to 14 percent after six months in one randomized trial. See the abstract of the 2003 trial. The lesson is that lifestyle can make a real difference, but results vary and depend on how strictly you follow the plan.
What do lifestyle changes include?
According to the National Heart, Lung, and Blood Institute, helpful steps include heart-healthy eating, regular physical activity (which can lower LDL and triglycerides and raise HDL), losing 3 to 5 percent of your weight, managing stress, quitting smoking, sleeping 7 to 9 hours and limiting alcohol. The old post recommended being more active, which also helps with blood pressure, excess weight and diabetes risk. It also suggested unprocessed fats, soy protein, nuts, oats and fiber-rich foods, and omega-3 fats from fish and plant sources, plus fruit and vegetables. MedlinePlus agrees with oats, fruit, legumes and fish twice a week, and says plant omega-3s (walnuts, flaxseed, chia seeds) have smaller amounts than fish. Our posts on exercise and cholesterol and eating to lower cholesterol with oats, fruit, beans and healthy fats give practical ideas.
What do statins do?
Statins are the most common medicine for high cholesterol. They reduce the amount of cholesterol the liver makes, and, according to the NHLBI, studies show they lower the risk of heart attack and stroke in people with high LDL cholesterol. The 2013 U.S. guideline classification calls a statin “moderate intensity” if it lowers LDL by about 30 percent to less than 50 percent, and “high intensity” if it lowers it by 50 percent or more. The NHLBI says that statins usually do not cause side effects, but they may raise the risk of diabetes in people already at high risk, may cause abnormal liver enzyme tests (although actual liver damage is extremely rare) and, rarely, can cause muscle damage.
When are drugs still the right choice?
The old post is right that there are other ways to lower cholesterol, but it makes lifestyle sound like a complete substitute. For some people it is not. The NHLBI says that your provider will weigh your cholesterol levels, your risk of heart disease, other conditions and your lifestyle, and genes also play a part: familial hypercholesterolemia is an inherited condition that lifestyle alone may not fix. Do not stop or skip a prescribed medicine without talking to your provider. Our post on when lifestyle is enough and when medicine helps and the guide to cholesterol, vitamins and drugs explain how doctors decide.
How do you start?
Ask for a cholesterol test, set one or two changes you can keep, such as an oatmeal breakfast and a daily walk, and recheck after the time your doctor suggests. Lifestyle and medicine are often used together, not as rivals.