A recent study challenges the belief that consuming eggs daily may lead to high cholesterol levels. According to experts at Harvard Health, eggs might not significantly increase LDL (“bad”) cholesterol levels as previously assumed. The study, published in July 2025 in The American Journal of Clinical Nutrition, indicates that saturated fat intake, rather than dietary cholesterol from eggs, plays a more crucial role in impacting cholesterol levels.
During the research, 48 adults with elevated LDL levels followed three distinct five-week dietary patterns. The study revealed that the rise in LDL cholesterol was notably associated with saturated fat consumption rather than egg intake. Interestingly, individuals who consumed two eggs per day experienced a reduction in their LDL levels, provided their diet was low in saturated fat.
The research emphasized that foods like beef, lamb, pork, processed meats, butter, cheese, ice cream, and palm oil are major sources of LDL-raising fats. The study highlighted the continued prevalence of cardiovascular disease as a leading cause of death and suggested that saturated fat, not dietary cholesterol from eggs, has a more significant impact on LDL cholesterol levels.
Moreover, the study on ScienceDirect noted that eggs, rich in dietary cholesterol but low in saturated fat, do not adversely affect blood lipids or increase cardiovascular disease risk. Some studies even propose that eggs may have potential heart-protective effects due to their high choline content and ability to improve HDL cholesterol levels.
Researchers also pointed out that egg yolk contains lutein and zeaxanthin, which are beneficial for eye health by protecting against harmful light and improving vision. These compounds may cross the blood-brain barrier, potentially enhancing neuronal function and physical activity, ultimately contributing to increased HDL cholesterol levels.
On average, one egg contains essential nutrients such as vitamins A, D, B12, and choline, crucial for various metabolic processes. Eggs offer a range of health benefits beyond concerns about cholesterol levels, making them a valuable dietary component.
Overall, the study challenges misconceptions about eggs and cholesterol, highlighting the importance of considering the overall diet’s composition, particularly the intake of saturated fats, in managing cholesterol levels and promoting heart health.