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A. It depends. Most people absorb about half the cholesterol they consume through foods, but absorption rates vary (from 20 to 60 percent) from person to person. This variation may help explain why dietary cholesterol seems to increase levels of “unhealthy” LDL blood cholesterol in some people more than others, says EatingWell advisor Alice Lichtenstein.
In any case, saturated and trans fats have a bigger detrimental effect on blood cholesterol levels, and heart health in general, than dietary cholesterol does. “Trans and saturated fats not only affect how much plaque is deposited in blood vessels, but also may damage the tissue of blood vessels,” says Susan Moores, M.S., R.D., a spokesperson for the American Dietetic Association. With a few exceptions-notably eggs and shellfish-foods high in cholesterol, such as fatty meats and whole-milk dairy, also tend to be high in saturated fat. Cutting back on sources of saturated fat automatically limits intake of dietary cholesterol.
Really, the best approach to controlling blood cholesterol is a big-picture one. “Most important to heart health is achieving a healthy body weight through diet and exercise,” explains Lichtenstein. Independent of specific dietary choices, research shows that shedding excess pounds lowers “unhealthy” LDL cholesterol and boosts the “healthy” HDL kind.
Cholesterol Diet Center
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