DEAR DOCTOR K: Does the amount of cholesterol you eat affect the cholesterol levels in your blood?
DEAR READER: I'm glad you asked this question, because I think doctors and the news media have not made it clear. For decades, doctors and food scientists have warned against the dangers of eating foods high in cholesterol. That seemed to make sense. First, high blood levels of so-called "bad" (LDL) cholesterol definitely are bad for your health. Second, it seems logical that the more cholesterol you take into your body when you eat, the higher the cholesterol in your blood. But there's growing agreement among nutrition scientists that cholesterol in food has little effect on cholesterol in the bloodstream.