New research published in The American Journal of Clinical Nutrition Volume 122, Issue1, July 2025, Pages 83-91 presents the result that eggs may not contribute to high LDL cholesterol levels as was believed for decades.
The amount of saturated fat in the diet is much worse for health than eating eggs.
To date, no study has directly compared the effects of a diet high in cholesterol and saturated fat with a diet high in cholesterol and low in saturated fat, or a diet low in cholesterol and high in saturated fat.
The study included high-cholesterol diets low in saturated fat (including two eggs per day), low-cholesterol and high in saturated fat (no eggs), and high-cholesterol and high in saturated fat (including one egg per day).
In all three cases, increases in LDL levels were significantly associated with saturated fat intake, but not with cholesterol intake from eggs.
Especially in the first group that had an intake of two eggs per day and a low intake of saturated fat, LDL levels decreased.
The findings of the study are very important because it is known that cardiovascular diseases are the leading cause of morbidity and mortality worldwide, with high blood cholesterol levels recognized as a significant risk factor.
Saturated fats are found in animal foods and in processed or ready-made meals.
Foods high in saturated fat include dairy products, butter, milk, cheese, ice cream, beef, lamb, pork and their processed derivatives such as ham, sausages, bacon, palm oil, coconut oil and standard products such as cookies, puff pastry, cakes, etc.
Replacing saturated fats with unsaturated fats such as olive oil and fish and avoiding processed meats and ready-made foods and meals will have significant benefits for our body by reducing LDL cholesterol (as long as we do not have familial hyperlipidemia) and allowing us to eat eggs, which are one of the most nutritious foods with the highest biological value of protein available.
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