Tuesday, January 12, 2010

Why Eggs?


Consider the egg. Its purpose is to bring new life into the world and to nourish that life until it reaches the point where it can survive on its own. No wonder eggs are one of the most nutrient-rich foods available to us. The egg is a symbol of spring and new life partly because of the nourishment it provides. But it is also because during the winter, chickens do not naturally lay many eggs. The return of the light brings the return of eggs.
Eggs have lots of vitamins. They are rich in the B vitamin family, and also contribute vitamins A and D. In particular, egg yolks are one of the greatest sources of riboflavin, B12, and choline, which may well not only help developing brains in utero, but protect us from age-related memory loss. In the mineral department, eggs are especially rich in selenium. Eggs are also abundant in lutein and zeaxanthin, carotenoids which protect our eyes from macular degeneration, among other benefits. And the lutein in eggs seems to be better absorbed than when it comes from vegetable sources. Almost all these nutrients are in the yolk of the egg. Some eggs even have significant amounts of omega-3 fats. So-called "Omega-3 eggs" have usually been been fed flax seeds to raise the level of omega-3 fat in the eggs. Also, hens that have been allowed to feed on a variety of natural food for them (greens, grubs, etc) produce eggs with more omega-3 fat. "Pastured eggs" are one name for these hens, though note that "free range" hens usually don't share this diet.

Do you know why the egg is so incredible when it comes to nutrition? One egg has 13 essential nutrients in varying amounts – including high-quality protein, choline, folate, iron and zinc – for only 75 calories. Eggs also play a role in weight management, muscle strength, healthy pregnancy, brain function, eye health and more.

One egg provides 6 grams of protein, or 12% of the Recommended Daily Value. Eggs provide the highest quality protein found in any food because they provide all of the essential amino acids our bodies need in a near-perfect pattern. While many people think the egg white has all the protein, the yolk actually provides nearly half of it.The high-quality protein in eggs helps you to feel full longer and stay energized, which contributes to maintaining a healthy weight. In fact, research* shows that eggs eaten at the start of the day can reduce daily calorie intake, prevent snacking between meals and keep you satisfied on those busy days when mealtime is delayed. Muscle Strength, Repair & Preservation Research indicates that high-quality protein may help active adults build muscle strength and middle-aged and aging adults prevent muscle loss. Consuming eggs following exercise is a great way to get the most benefits from exercise by encouraging muscle tissue repair and growth.

But Isn’t it Bad to Eat Too Many Eggs?

Eggs have a lot of cholesterol, so for a long time it was considered unhealthy to eat too many. However, advice is changing on this as more research comes out. To my knowledge, no evidence shows that eggs are in any way harmful to our health. In fact, some studies show an improvement in blood lipids from eating eggs. It seems that this high-cholesterol food raises our "good" cholesterol rather than the "bad."

Eggs have a shelf life of about 60 days when refrigerated. In the United States, the “sell by” date is no more than 30 days after the day the eggs were packed. They should be used within 3 to 5 weeks after that date, according to the USDA. Some hens are fed feed with flax seed meal to increase the amount of omega-3 fatty acids in the yolk. However, it would be a lot less expensive simply to eat the flax yourself.

Eggs are best stored in the carton they came in the coldest part of the refrigerator. To insure protection against disease such as salmonella (rare), thoroughly cook eggs. Egg whites can be frozen for up to a year. Egg yolks don’t freeze as successfully, but mixing ½ tsp salt in with each yolk will work. Hard-cooked eggs will keep for up to a week in the refrigerator; they do not freeze well.
When you eat eggs for breakfast, it takes more energy for your body to burn that protein. It gives your metabolism a big jump start for the day.

1 comment:

Unknown said...

Thanks for the info. I will try to eat it more often now.