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Do eggs raise cholesterol?

Chicken eggs are an affordable source of protein and other nutrients. They're also naturally high in cholesterol. But the cholesterol in eggs doesn't seem to raise cholesterol levels the way some other foods, such as those high in trans fats and saturated fats, do.

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Are chicken eggs good or bad for my cholesterol? Answer From Francisco Lopez-Jimenez, M.D. Chicken eggs are an affordable source of protein and other nutrients. They're also naturally high in cholesterol. But the cholesterol in eggs doesn't seem to raise cholesterol levels the way some other foods, such as those high in trans fats and saturated fats, do. Although some studies have found a link between eating eggs and heart disease, there could be other reasons for these findings. The foods people typically eat with eggs, such as bacon, sausage and ham, might do more to boost heart disease risk than eggs do. Plus, the way eggs and other foods are cooked — especially if fried in oil or butter — might play more of a role in the increased risk of heart disease than eggs themselves do. Most healthy people can eat up to seven eggs a week without increasing their risk of heart disease. Some studies have shown that this level of egg consumption might even help prevent certain types of stroke and a serious eye condition called macular degeneration that can lead to blindness. But if you have diabetes, some research suggests that eating seven eggs a week increases heart disease risk. However, other research failed to find the same connection. Still other research suggests that eating eggs might increase the risk of developing diabetes in the first place. More research is needed to figure out the link between eggs, diabetes and heart disease. Health experts now suggest eating as little dietary cholesterol as you can, aiming to keep intake under 300 milligrams (mg) a day. One large egg has about 186 mg of cholesterol — all of which is found in the yolk. If your diet contains little other cholesterol, according to some studies, eating up to an egg a day might be an OK choice. If you like eggs but don't want the cholesterol, use only the egg whites. Egg whites contain no cholesterol but still contain protein. You can also use cholesterol-free egg substitutes, which are made with egg whites.

With Francisco Lopez-Jimenez, M.D.

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What happens if you eat too many eggs?

Eggs are also loaded with cholesterol—about 200 milligrams for an average-sized egg. That's more than double the amount in a Big Mac. Fat and cholesterol contribute to heart disease. A 2021 study found that the addition of half an egg per day was associated with more deaths from heart disease, cancer, and all causes.

About 60% of the calories in eggs are from fat—much of which is saturated fat. Eggs are also loaded with cholesterol—about 200 milligrams for an average-sized egg. That’s more than double the amount in a Big Mac. Fat and cholesterol contribute to heart disease. A 2021 study found that the addition of half an egg per day was associated with more deaths from heart disease, cancer, and all causes. For every 300 milligrams of dietary cholesterol consumed per day, mortality risk increased by up to 24%. A study published in JAMA found that that each 300 milligram dose of dietary cholesterol was associated with an increased risk for cardiovascular disease and mortality by 17% and 18%, respectively. When it came to eggs, each half egg caused a 6% and 8% increased risk, respectively. A study in the Canadian Journal of Cardiology found that those who eat the most eggs have a 19% higher risk for cardiovascular problems. Industry-funded research has downplayed the effects of egg consumption on cholesterol levels. A Physicians Committee review published in the American Journal of Lifestyle Medicine examined all research studies published from 1950 to March 2019 that evaluated the effect of eggs on blood cholesterol levels and examined funding sources and their influence on study findings. Research published prior to 1970 showed no industry influence on cholesterol research. The percentage of industry-funded studies increased over time, from 0% in the 1950s to 60% in 2010-2019. More than 85% of the research studies, regardless of funding sources, showed that eggs have unfavorable effects on blood cholesterol. But 49% of industry-funded publications reported conclusions that conflicted with actual study results, compared with 13% of non-industry-funded trials.

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