Eggs are quite possibly the world's perfect protein source. The six grams of protein in each egg has the highest biological value -- a measure of how well it supports your body's protein needs -- of any food, including beef. The yolks contain vitamin B12, deficiencies of which can cause attention, mood, and thinking problems.
Depending on where you're getting your eggs, though, you could be getting a lot more of stuff you don't want. First you'll get some arsenic, added to feed to promote...Full Story