Protein 101

If you buy a food supplement that contains an enzyme (such as super-oxide-dismutase, SOD) designed to work in your blood or in your cells, you are wasting money.  Your digestive enzymes will split up this enzyme and reduce it to amino acids.  The body will use these amino acids according to its own priorities, not necessarily those that you may have had in mind.  Remember; dietary protein is digested by enzymes in your intestine to amino acids, amino acids are reconstructed by cellular enzymes to body protein.

Amino acids, if not used for protein synthesis or other purposes, lose their nitrogen (amino group) and are metabolized for energy.  The body get rid of ammonia, which contains the nitrogen  (from amino groups), by converting it to urea in the liver.  The blood carries the urea to the kidney, where it is excreted in the urine.  Some amino acids are also used for synthesis of hormones or other chemical compounds.  Tryptophan can serve as a precursor for serotonin, a neurotransmitter.  Tryptophan can also be converted to a vitamin, niacin.  Certain amino acids are also converted to glucose, if the body does not receive sufficient carbohydrated.  Starving or fasting people make their glucose this way. 

Read complete article @  http://www.isnare.com