Although previous federal dietary guidelines recommended limiting consumption of dietary cholesterol to 300 milligrams per day, the
current guidelines instead suggest keeping dietary cholesterol consumption "as low as possible without compromising the nutritional adequacy of the diet." The good news is, that leaves room for flexibility. But it is not a free pass to eat all the dietary cholesterol you want.
But focusing on a number, or the lack of evidence linking dietary cholesterol to health risks, could be a misstep, Van Horn said. That's because foods high in dietary cholesterol also tend to be high in saturated fat. The exceptions are eggs and shellfish, such as shrimp and lobster. Despite being high in dietary cholesterol, shellfish is relatively healthy when not fried.
Overall, Van Horn said, "research has shown that you really cannot isolate dietary cholesterol from that total fat intake." And eating too much saturated fat – along with too much sugar and sodium, and too little fiber – raises the risk of heart disease.
Instead of thinking about how much dietary cholesterol you can get away with, try thinking about eating an all-around healthy diet, with lots of fruits and vegetables, whole grains, healthy sources of protein and low-fat or fat-free dairy products, Van Horn said.
Put another way: If you're eating a healthy diet, Van Horn said, a little butter now and then (and its 31 mg of dietary cholesterol per tablespoon) on your toast should not pose a major risk.
While cholesterol-rich foods are not recommended, she said, "they are better tolerated as a food source when they are the exception and not the rule."