Eggs: protein, vitamins, and minerals all in one food
One of the most complete foods out there, with high-quality protein — and the center of one of the biggest misunderstandings in modern nutrition.
Few foods deliver so much for so little. One large egg has about 70 calories, 6 g of complete protein, and a list of micronutrients that is difficult to match in a single food.
What is in an egg
- High biological value protein: all essential amino acids in proportions that the body can use very well
- Choline: essential for memory and brain development, and present in low amounts in most diets
- Vitamins A, D, E, K, and B-complex vitamins: concentrated mainly in the yolk
- Selenium and zinc: minerals linked to immune and antioxidant function
- Lutein and zeaxanthin: carotenoids associated with eye health
The cholesterol misunderstanding
For decades, eggs were limited because of the cholesterol in the yolk. The recommendation was based on a premise that did not hold up: that dietary cholesterol would raise blood cholesterol in the same proportion.
Today, it is known that, in most people, the liver adjusts its own production according to intake. What most influences circulating LDL is the overall dietary pattern — especially saturated fat and trans fat — and not the cholesterol in the yolk in isolation.
How to prepare it without missing the point
The preparation method changes the outcome more than the egg itself:
- Boiled, poached, or scrambled over low heat: better preserves nutrients and does not add unnecessary fat
- Fried in plenty of oil or at very high temperatures: oxidizes some of the fats and adds calories that did not come from the food
- Always well cooked for at-risk groups: pregnant women, young children, older adults, and immunosuppressed people should avoid runny yolks
Conclusion
Eggs are inexpensive, versatile, and nutrient-dense. For most healthy people, one to two per day can easily fit into a balanced diet — preferably with the yolk, which is where most of the nutritional value is found.
