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Research Snapshot

A 2008 study from Surrey University published in the European Journal of Nutrition provides evidence that increasing dietary cholesterol intake by eating two eggs a day does not increase total plasma cholesterol when accompanied by moderate weight loss. The study authors concluded that cholesterol-rich foods should not be excluded from dietary advice for weight loss. (1)

A 2007 study of 9,500 people reported in Medical Science Monitor showed that eating one or two eggs a day did not increase the risk of heart disease or stroke among healthy adults. The study noted that eating eggs may actually be associated with a decrease in blood pressure. (2)

A study presented at the Experimental Biology conference in 2007 showed that egg consumption contributed less than one percent of the risk for heart disease when other adjustable risk factors were taken into account. The researchers concluded that wide-sweeping recommendations to limit egg consumption may be misguided, particularly when eggs' nutritional contributions are considered. (3)

In 2006, Nutrition Bulletin published a review of scientific studies from the past 30 years showing that eating eggs daily does not have a significant impact on blood cholesterol or heart disease risk. The authors noted several benefits of egg consumption – including the high-quality protein eggs provide – and argued that consumption of one to two eggs a day should be actively encouraged as part of a calorie-restricted weight-loss plan. (4)

A six-week study conducted by researchers at the Yale Prevention Research Center in 2005 showed that adding two eggs a day to a healthful diet did not significantly increase blood cholesterol levels in young or middle-aged men and women with normal or even moderately elevated blood cholesterol levels. (5)

A review of more than 25 studies that appeared in the Journal of the American College of Nutrition in 2000 showed that eating an egg a day isn't associated with increased risk of heart disease in healthy men and women, even after taking into account other aspects of their diet that may increase the risk for heart disease. (6)

A 1999 Harvard University study that collected data from more than 100,000 men and women found no significant difference in heart disease risk between healthy adults who ate less than one egg a week and those who ate more than one egg a day, and that eating up to one egg a day is unlikely to have a significant overall impact on the risk of heart disease or stroke. (7)




  1. Harman Nicola L, Leeds, Anthony R, and Griffin, Bruce A. Increased dietary cholesterol does not increase plasma low density lipoprotein when accompanied by an energy-restricted diet and weight loss. European Journal of Nutrition.2008; 47:287-293

  2. Qureshi A, et al. Regular egg consumption does not increase the risk of stroke or cardiovascular diseases. Medical Science Monitor. 2007; 13(1): CR1-8.

  3. Tran NL, et al. Balancing and communicating risks and benefits associated with egg consumption – a relative risk study. Presented at Experimental Biology 2007, Washington, D.C.6 Lee A and Griffin B. Dietary cholesterol, eggs and coronary heart disease risk in perspective. Nutrition Bulletin (British Nutrition Foundation). 2006; 31:21-27.

  4. Lee A and Griffin B. Dietary cholesterol, eggs and coronary heart disease risk in perspective. Nutrition Bulletin (British Nutrition Foundation). 2006; 31:21-27.

  5. Katz DL, et al. Egg consumption and endothelial function: a randomized controlled crossover trial. Int J Cardiol. 2005; 99:65-70.

  6. Kritchevsky S and Kritchvesky D. Egg consumption and coronary heart disease: an epidemiological overview. J Am Coll Nutr. 2000; 19(5): 549S-555S.

  7. Hu FB, et al. A prospective study of egg consumption and risk of cardiovascular disease in men and women. JAMA. 1999; 281:1387-94.

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