Egg consumption and longevity
Pro Research Analysisby 
Searched over 200M research papers
Egg Consumption and Longevity: All-Cause Mortality Insights
Several large cohort studies have examined the relationship between egg consumption and longevity, with mixed findings depending on population and intake levels. In Chinese adults, moderate to high egg consumption (3–6 times per week or more) was associated with a lower risk of all-cause mortality compared to non-consumers, suggesting a potential benefit for long-term health and longevity 12. Similarly, in an Australian cohort of older adults (aged 70+), consuming eggs 1–6 times per week was linked to a 17% lower risk of all-cause mortality and a 29% lower risk of cardiovascular mortality compared to infrequent consumption .
However, a study in rural China found that consuming more than 6 eggs per week was associated with an increased risk of all-cause mortality, especially among individuals with a higher body mass index (BMI ≥ 21.2 kg/m²), indicating that very high egg intake may not be optimal for everyone .
A comprehensive meta-analysis of 33 cohort studies found no significant association between the highest versus lowest egg intake and all-cause, cardiovascular, coronary heart disease, or stroke mortality, but did observe a slightly increased risk of cancer mortality with higher egg consumption. The analysis suggested that consuming up to one egg per day as part of a healthy diet is generally safe for most people .
Egg Consumption, Cholesterol, and Cause-Specific Mortality
The role of dietary cholesterol from eggs in longevity is debated. In a large US cohort, higher intakes of whole eggs and cholesterol were associated with increased all-cause, cardiovascular, and cancer mortality. The increased risk was largely attributed to cholesterol intake, and replacing whole eggs with egg whites or other protein sources was linked to lower mortality . In contrast, a Chinese cohort found that cholesterol from eggs was inversely associated with total mortality, while cholesterol from non-egg sources was linked to higher mortality, suggesting that the source of cholesterol may matter .
Trends, Patterns, and Predictors of Egg Intake
Egg consumption patterns have changed over time, often in response to dietary guidelines and public health messaging. Studies following individuals for over 45 years found that egg intake decreased when guidelines restricted dietary cholesterol, but increased again as these guidelines were relaxed. Men, those with higher education, and people with diabetes tended to consume more eggs, while those with high cholesterol or on cholesterol-lowering medication initially consumed fewer eggs, though this difference disappeared in recent years 68. Despite updated guidelines, some people still limit egg intake due to concerns about cholesterol .
Egg Consumption and Cognitive Function in Older Adults
Eggs are a source of nutrients beneficial for cognitive health. Longitudinal studies in older adults found no detrimental effects of egg consumption on cognitive function. In fact, some benefits were observed: women who consumed eggs had less decline in semantic memory, and men showed better verbal episodic memory with higher egg intake. These findings suggest that moderate egg consumption may support cognitive health in aging populations 910.
Conclusion
The relationship between egg consumption and longevity is complex and may depend on intake levels, individual health status, and the source of dietary cholesterol. Moderate egg consumption (up to one egg per day or several times per week) appears safe and may even be beneficial for longevity and cognitive health in most populations. However, very high intake may increase mortality risk in some groups, and the impact of cholesterol from eggs versus other sources may differ. Overall, eggs can be included as part of a balanced diet, but excessive consumption should be approached with caution, especially for individuals with higher BMI or other risk factors.
Sources and full results
Most relevant research papers on this topic