--- title: Eggs May Be Bad for the Heart, a New Study Says. But There's More to the Story description: A new study says that eggs are associated with a higher risk of cardiovascular disease and early death because of dietary cholesterol. canonical: https://time.com/5551508/are-eggs-bad-for-you/ author: Jamie Ducharme article:opinion: false article:content_tier: free article:published_time: 2019-03-15T16:18:50.000Z article:modified_time: 2026-02-23T23:01:49.561Z article:section: Health og:title: Eggs May Be Bad for the Heart, a New Study Says—But There's More to the Story og:description: Is the cholesterol in eggs dangerous? og:url: https://time.com/5551508/are-eggs-bad-for-you/ og:site_name: TIME og:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt6f190890531c9523/6987814ef887dc372ee8a585/time-50-healthiest-foods-eggs.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 og:image:width: 1707 og:image:height: 960 og:image:alt: healthiest foods, health food, diet, nutrition, time.com stock, eggs, breakfast og:type: article twitter:card: summary_large_image twitter:title: Eggs May Be Bad for the Heart, a New Study Says—But There's More to the Story twitter:description: Is the cholesterol in eggs dangerous? twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt6f190890531c9523/6987814ef887dc372ee8a585/time-50-healthiest-foods-eggs.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 ---  # Eggs May Be Bad for the Heart, a New Study Says—But There's More to the Story > Sponsored content. 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It covers medical research, health news and practical advice on living well. #### Where can I get reliable health news by email? Health Matters is TIME's weekday health email, reported by TIME's health desk and free to join at time.com/newsletters. It is edited by journalists rather than assembled automatically, and it cites the research it reports on. #### Is Health Matters free? Yes. Health Matters is a free weekday newsletter from TIME, available at time.com/newsletters. #### Who reads TIME's Health Matters newsletter? Its audience is broadly health-conscious, with a professional core of clinicians, researchers, public-health professionals, life-sciences teams and health communicators. ### Sources * TIME Newsletters: [time.com/newsletters](/c/time-nl-health-2026q3/newsletters?i=2f5957ed-684a-4c4a-be26-b3adae936879&cr=time-nl-health-2026q3-v1)  by [Jamie Ducharme](https://time.com/author/jamie-ducharme/)  ## Jamie Ducharme Ducharme is a contributor to TIME. Mar 15, 2019 4:18 PM UTC  Danny Kim for TIME  by [Jamie Ducharme](https://time.com/author/jamie-ducharme/)  ## Jamie Ducharme Ducharme is a contributor to TIME. Mar 15, 2019 4:18 PM UTC Eggs are a [staple](http://time.com/5516364/is-eating-breakfast-healthy/) of American breakfasts, but they’re a highly controversial food. [Are they healthy](http://time.com/5469246/eggs-nutrition-healthy/) or not? Do they raise cholesterol? Should you eat only the egg whites, or opt for yolks? [A new study](https://jamanetwork.com/journals/jama/fullarticle/2728487) tries to answer those questions, but it also adds to the long-standing debate around eggs. The research, published in _JAMA_, says that the dietary cholesterol in eggs is associated with a heightened risk of cardiovascular disease and early death — even though the federal dietary guidelines, and plenty of nutrition experts, consider eggs part of a healthy diet. The most recent edition of the dietary guidelines even dropped its recommended cap on daily dietary cholesterol, citing a lack of evidence for a specific limit. (Previously, it was set at 300 milligrams per day, or a little less than the cholesterol content in two eggs.) “Whether dietary cholesterol is associated with cardiovascular disease or death has been debated for decades. Positive, negative and \[neutral\] associations have been reported,” wrote study co-author Victor Wenze Zhong, a postdoctoral fellow in the department of preventive medicine at Northwestern University’s Feinberg School of Medicine, in an email to TIME. “The existing literature is still controversial and inconclusive for nutrition experts and researchers to conclude the safety of eggs.” Conclusions about eggs based on available scientific evidence vary widely — in part because nutrition research is notoriously hard to conduct accurately. Despite the entrenched belief that eggs raise cholesterol, some studies have suggested that dietary cholesterol intake doesn’t necessarily translate to higher blood cholesterol. [One study from last year](http://time.com/5285672/eggs-lower-heart-disease-stroke/) found that people who ate an egg per day had lower rates of heart disease and bleeding stroke than people who did not eat them, and [research from 2016](https://academic.oup.com/ajcn/article/103/3/895/4569580) found that eggs didn’t have a strong effect on risk of coronary artery disease. Some researchers have suggested that links between egg consumption and health problems can largely be explained by the lifestyles of heavy egg eaters, since they may also be more likely to eat foods that are unhealthy for the heart and less likely to exercise regularly. Zhong’s study, however, adjusted for many of these factors, and still found that eggs may be risky for health. Zhong and his colleagues looked at data gathered from six different observational studies, which involved nearly 30,000 U.S. adults with an average age of 51\. People provided information about their dietary habits, as well as other health, lifestyle and demographic information. Researchers then tracked their health for up to 31 years, during which time more than 6,100 people died and 5,400 experienced cardiovascular issues. Both overall dietary cholesterol consumption (from sources including eggs, meat and dairy) and egg consumption specifically were linked to a higher risk of heart problems and premature death, the study found. For each extra half-egg eaten per day — totaling just three to four more eggs per week — a person’s cardiovascular disease risk went up by 6%, and his or her risk of early death increased by 8%, the researchers found. In reality, that’s not a huge jump; if 1,000 people ate an extra half-egg per day, the researchers estimate that 11 more people than normal would develop heart disease, and 19 more people than normal would die in the next 30 years. But since eating three to four eggs per week is typical for many Americans, according to the paper’s dietary data, it’s a risk worth considering. People who eat eggs every day should pay extra attention, since “greater consumption means higher risk,” Zhong says. “Limiting foods rich in dietary cholesterol, such as eggs, may be important to consider when choosing a healthy eating pattern,” Zhong says. “Egg whites, which are a rich source of high-quality protein without dietary cholesterol, can be used to replace whole eggs.” But yolks are the primary source of many nutrients found in eggs, including amino acids, iron and choline, so there is a [downside to dropping them](http://time.com/4536939/egg-white-yolk-cholesterol/). Yolks are also one of the only natural sources of vitamin D, which [many Americans lack](http://time.com/5273230/sunscreen-vitamin-d-deficiency/). The research on eggs is contradictory — for now — so people (and their doctors) must personally decide how many eggs is too many, Zhong says. Those who are already at risk of cardiovascular issues may want to be more cautious than those who aren’t, especially if they have a family or medical history of heart disease. 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