Can eggs increase bad cholesterol and reduce your longevity?

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A recent study from Zhejiang University sheds light on the link between egg consumption and longevity, suggesting that eating whole eggs and dietary cholesterol may increase the risk of death.

In contrast, consuming egg whites or egg substitutes appears to be associated with a lower risk of death. These findings contribute to the ongoing debate about the health impacts of eggs and dietary cholesterol, which has been a controversial topic in nutrition science.

The research analyzed data from 521,120 participants in the NIH-AARP Diet and Health Study. The participants, aged 50–71 years, were recruited from six states and two cities in the United States between 1995 and 1996.

Most participants (91.8%) were non-Hispanic white, and 41.2% were women. Over a follow-up period averaging 16 years, 129,328 of these individuals passed away.

Using dietary questionnaires, the researchers assessed the participants’ egg consumption and cholesterol intake. They found a strong link between eating whole eggs and a higher risk of death from all causes.

Specifically, each additional 300 milligrams of cholesterol consumed per day was associated with a 19% increase in death risk, while eating an extra half of a whole egg daily was linked to a 7% increase.

In contrast, the consumption of egg whites or egg substitutes was associated with a lower risk of death. Substituting half a whole egg with the same amount of egg whites or substitutes reduced the risk of heart disease-related death by 3%.

This suggests that choosing egg whites or plant-based protein alternatives over whole eggs could improve heart health and promote a longer life.

Cholesterol, a nutrient abundant in egg yolks, has long been debated in its role in heart health. While it is essential for certain bodily functions, excessive intake has been linked to the buildup of plaque in arteries, which can increase the risk of heart disease and stroke.

The findings from this study reinforce the idea that limiting cholesterol intake is a prudent step toward better cardiovascular health.

The researchers suggest that replacing whole eggs with healthier protein sources—such as egg whites, egg substitutes, or plant-based alternatives—could be a simple dietary change to improve longevity.

While the study does not establish a direct cause-and-effect relationship, it adds to the growing evidence that dietary choices play a significant role in overall health outcomes.

This research, led by Yu Zhang and published in PLOS Medicine, highlights the importance of making informed food choices for long-term health.

For individuals concerned about heart health, this study aligns with broader advice to focus on a balanced diet that minimizes cholesterol intake and prioritizes nutrient-dense, heart-friendly foods.

More research is needed to fully understand how egg consumption impacts health, but for now, opting for egg whites or substitutes could be a practical step toward improving heart health and reducing the risk of early death.

Simple dietary changes, combined with other healthy habits, can contribute to a longer, healthier life.

If you care about heart health, please read studies that yogurt may help lower the death risks in heart disease, and coconut sugar could help reduce artery stiffness.

For more information about health, please see recent studies that Vitamin D deficiency can increase heart disease risk, and results showing vitamin B6 linked to lower death risk in heart disease.

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