One egg a day does not increase the risk of cardiovascular disease, U.S. researchers from Harvard University's T.H. Chan School of Public Health have shown, study results published in BMJ.
The researchers analyzed data from three large studies involving 215,000 people without serious chronic diseases at the start of the study. Their health status was monitored for 34 years.
The researchers studied the participants' diets and found that people typically ate one to five eggs a week. It turned out that this amount of eggs did not increase the risk of myocardial infarction, coronary heart disease or stroke. The link between egg consumption and cardiovascular risk was found only for people with type 2 diabetes.
On average, most people don't eat more than one egg a day. You can have two eggs for breakfast, but only two or three times a week. So the average consumption actually turns out to be less than one egg a day, explained Frank Hu, co-author of the study.
The researchers also conducted a meta-analysis of 28 European, American and Asian studies, which together examined the egg consumption habits of 1.7 million people. Data from these studies also confirm that one egg a day has no negative impact on heart health.
Asian studies have found an association of egg consumption with some reduction in the risk of cardiovascular disease. Researchers have offered the explanation that in Asian cultures, eggs are usually in a variety of dishes, whereas in the West, eggs are often eaten alone, with red or processed meats and white bread.