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Cracked or Not: Is an Egg a Day Harmful?

Latest Study Suggests Frequent Egg Eaters Die Earlier
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WebMD Health News

July 28, 2004 -- Is the all-clear on eggs all over? A new Japanese study breaks through the promising news on eggs. Eating eggs every day increases a woman's risk of dying young, it says.

The report appears this month in the American Journal of Clinical Nutrition. The 14-year study shows that women who ate one egg a day were more likely to die during those 14 years compared with women who ate one to two eggs a week.

It stirs up an old argument -- whether the egg yolk's 200 mg of cholesterol contributes to health problems like heart disease.

Two years ago, a study published by the American Heart Association found that up to one egg per day did not have a significant impact on risk for heart disease or stroke. The AHA now recommends eating less than 300 mg per day on average. People with high cholesterol should eat no more than 200 mg per day.

But that's not all: Scientists have discovered something called phosphatidylcholine, or PC, a compound found naturally in eggs. It seems to block an egg's cholesterol from entering the bloodstream. And just this month, a group of Connecticut researchers found that adding up to three eggs per day raises some types of LDL "bad" cholesterol -- but not the type of LDL known to clog arteries.

Yet eggs are good food -- a highly digestible, excellent source of protein, lutein (a powerful antioxidant), vitamins A, E, and B, and folate.

Cracking the Data

The study involved more than 9,000 Japanese men and women whose egg consumption, cholesterol levels, and deaths were documented from 1980 to 1994.

Women who ate an egg daily were more likely to die early than women who ate one or two eggs per week. Total cholesterol level among the frequent egg eaters was on average 6 mg/dL higher than less-frequent egg eaters.

For men, frequent egg eating seemed to pose no problems to total cholesterol. Fewer men ate eggs every day, for one thing. And men who were daily egg eaters had no higher risk of early death than women.

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