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Why are eggs awesome: Everything you need to know about eggs & Complete Egg Nutrition Facts

In 1968, the American Heart Association advised limiting egg consumption to fewer than three per week, believing dietary cholesterol raised blood cholesterol and cardiovascular risk. This negatively impacted both the egg industry and public eating habits, despite eggs being affordable and nutrient-rich.

By 1995, coordinated research began to reevaluate eggs. After decades of study, evidence shows egg intake is not linked to increased health risks for most people. Eggs are now recognized as highly nutritious, affordable, moderate in calories (about 140 kcal/100 g), and versatile in cooking.

Nutrients in Eggs

Proteins
Eggs are protein-rich, averaging 12.5 g per 100 g. Yolk has about 15.9 g, egg white 10.9 g. Nearly 1,000 proteins have been identified in eggs, with about 150 in egg white. Ovalbumin makes up half of egg white protein and provides essential amino acids. Other proteins include lysozyme (antibacterial, used in medicine and food preservation), ovomucin (contributes viscosity), and protease inhibitors (slowing digestion when raw).

Lipids
Egg yolk lipids are packaged in lipoproteins. While total fat content is relatively fixed, fatty acid composition depends on hen diet. Eggs contain more unsaturated than saturated fats (5.31 g vs. 2.64 g per 100 g), with valuable essential fatty acids like linoleic acid. Though eggs are high in cholesterol (400 mg per 100 g), studies show no consistent link between egg intake and elevated blood cholesterol or cardiovascular disease. Plasma cholesterol is more strongly influenced by saturated fats, especially myristic (14:0) and palmitic (16:0) acids. Eggs are low in myristic acid but richer in cholesterol-lowering linoleic acid.

Most people can safely eat eggs, though “hyper-responders” (15–25% of the population) may experience greater cholesterol increases.

Carbohydrates
Eggs are low in carbs (0.7%) and contain no fiber. Glucose is the main sugar, mostly in egg white. Trace amounts of other sugars are also present.

Vitamins and Choline
Egg yolk is rich in nearly all vitamins except vitamin C, including A, D, E, K, and B-complex vitamins. Egg white also contributes several B vitamins. Eggs are a major source of choline, especially in the yolk (680 mg/100 g), important for brain and liver function.

Minerals and Trace Elements
Eggs provide phosphorus, calcium, potassium, and moderate sodium (142 mg/100 g). They also contain essential trace elements like copper, iron, magnesium, manganese, selenium, and zinc, with yolk supplying most iron and zinc.

Bioactive Compounds

Antimicrobials
Egg proteins, particularly in egg white, provide antibacterial, antiviral, antifungal, and antiparasitic effects.

Antioxidants
Eggs contain antioxidant vitamins, carotenoids, minerals, and proteins such as ovotransferrin, ovomucoid, and ovomucin, as well as peptides derived from these. Yolk proteins also contribute.

Anticancer Potential
Research indicates egg white lysozyme may suppress tumors through immune stimulation. Ovomucin and peptides derived from ovotransferrin also show anti-tumor effects. Though limited, these findings suggest eggs may offer anticancer benefits.

Conclusion

Eggs remain a high-quality, affordable, and widely consumed food suitable for adults, children, and the elderly. Beyond essential nutrients, they contain numerous bioactive compounds with potential roles in disease prevention and health promotion.
[Transcribed and summarized by AI]

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