"So much data have already been published on this topic, which generally show that low-to-moderate egg consumption (no more than one egg per day) is not associated with increased risk of heart attack or stroke", Frank Hu, a professor of nutrition and epidemiology at the Harvard T.H. Chan School of Public Health, said in an email.
Now, a new study - published Friday by the Journal of the American Medical Association (JAMA) - has weighed in.
Researchers at Northwestern University's Feinberg School of Medicine and elsewhere pooled results from six previous studies, analyzing data on nearly 30,000 USA adults who self-reported daily food intake. The study had up to 31 years of follow up, during which 5,400 cardiovascular events and 6,132 all-cause deaths were diagnosed.
Cho says she never stopped recommending her patients limit their dietary cholesterol intake to 300 milligrams a day or told patients they could eat as many eggs as they want. But, the downside of the study is that it is based on the answer provided by the participants. They took into account high blood pressure, smoking, obesity and other traits that could contribute to heart problems.
Dr. Bruce Lee of Johns Hopkins University, said nutrition studies are often weak because they rely on people remembering what they ate.
"We have one snapshot of what their eating pattern looked like", Allen said.
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High Cardiovascular Disease And All-Cause Death Risk To really look at the effect of eggs of a person's diet, researchers looked at the data from 29,615 adults from six cohort studies and found that those who ate three to four eggs per week had a 6 percent higher risk for cardiovascular disease and 8 percent higher risk for any cause of death.
"It's sad news to everyone", says study author Norrina Allen, PhD, a cardiovascular epidemiologist at the Northwestern University School of Medicine in Chicago. "I'm just suggesting that people eat them in moderation". However, a new study revealed the contrary, that eggs might indeed cause heart disease, but when consumed in excess, though.
This new study awakened the decade-old debate over guidelines for Americans' cholesterol consumption.
The researchers stated the fugitive is cholesterol. Eating less than 300 milligrams of dietary cholesterol per day was the guideline recommendation before 2015.
The message is about cholesterol, which happens to be high in eggs and especially yolks, and as a part of healthy diet, people need to reduce their daily intake of cholesterol. "There are a lot of other nutrients in the yolks as well", Sacchi said.
Moreover, Andersen said, the study is observational, which means it can only show there's an association between egg consumption and heart disease but it can't prove eggs are the culprit.
"I don't think that this study would change general healthy eating guidelines" that emphasize fruits, vegetables, whole grains, nuts and beans and limiting processed meats and sugar, Hu said.