I agree with CCrom 100%. Raw egg whites are a destroyer of Biotin. Alcohol and Caffeine are other biotin destroyers. Biotin is an integral vitamin in the metabolism of carbohydrates, Amino Acids and fatty acids. Deficiency is a very bad thing. Biotin deficiency is common as our daily diet usually do not supply enough biotin. Biotin is found in egg yolks, organ meats, brewer's yeast, legumes & beans, nuts, oatmeal.
Biotin Deficiency signs: Muscle pain, poor fat metabolism, poor appetite, greyish skin color, depression. Dermatitis.