Egg yolks and whole eggs store significant amounts of protein and choline ,
and are widely used in cookery. Due to their protein content, the United States Department of Agriculture categorizes eggs as Meats within the Food Guide Pyramid . Despite the nutritional value of eggs, there are some potential health issues arising from egg quality, storage, and individual allergies.
An egg that is old or bad will float in water while fresh ones will sink in water.
