Since the domestication of the chicken, people have been enjoying and nourishing themselves with eggs. As a long time symbol of fertility and rebirth, the egg has taken its place in religious as well as culinary history. In Christianity, the symbol of the decorated egg has become synonymous with Easter. There are lots of different types of egg available, the most commonly raised are chicken eggs while more gourmet choices include duck, goose and quail eggs
Eggs are a very good source of inexpensive, high quality protein. More than half the protein of an egg is found in the egg white along with vitamin B2 and lower amounts of fat and cholesterol than the yolk. The whites are rich sources of selenium, vitamin D, B6, B12 and minerals such as zinc, iron and copper. Egg yolks contain more calories and fat. They are the source of cholesterol, fat soluble vitamins A, D, E and K and lecithin - the compound that enables emulsification in recipes such as hollandaise or mayonnaise.
Some brands of egg now contain omega-3 fatty acids, depending on what the chickens have been fed (always check the box). Eggs are regarded a 'complete' source of protein as they contain all eight essential amino acids; the ones we cannot synthesise in our bodies and must obtain from our diet.
1. Eggs are great for the eyes. According to one study, an egg a day may prevent macular degeneration due to the carotenoid content, specifically lutein and zeaxanthin. Both nutrients are more readily available to our bodies from eggs than from other sources.
2. In another study, researchers found that people who eat eggs every day lower their risk of developing cataracts, also because of the lutein and zeaxanthin in eggs.
3. One egg contains 6 grams of high-quality protein and all 9 essential amino acids.
4. According to a study by the Harvard School of Public Health, there is no significant link between egg consumption and heart disease. In fact, according to one study, regular consumption of eggs may help prevent blood clots, stroke, and heart attacks.
5. They are a good source of choline. One egg yolk has about 300 micrograms of choline. Choline is an important nutrient that helps regulate the brain, nervous system, and cardiovascular system.
6. They contain the right kind of fat. One egg contains just 5 grams of fat and only 1.5 grams of that is saturated fat.
7. New research shows that, contrary to previous belief, moderate consumption of eggs does not have a negative impact on cholesterol. In fact, recent studies have shown that regular consumption of two eggs per day does not affect a person’s lipid profile and may, in fact, improve it. Research suggests that it is saturated fat that raises cholesterol rather than dietary cholesterol.
8. Eggs are one of the only foods that contain naturally occurring vitamin D.
9. Eggs may prevent breast cancer. In one study, women who consumed at least 6 eggs per week lowered their risk of breast cancer by 44%.
10. Eggs promote healthy hair and nails because of their high sulphur content and wide array of vitamins and minerals. Many people find their hair growing faster after adding eggs to their diet, especially if they were previously deficient in foods containing sulphur or B12.