What happens to the protein?


(Alec) #1

Ok, every day I am eating 100g or so of protein, which I understand is used primarily to maintain muscle mass. We don’t gain 100g of muscle mass each day, so there must be some loss of muscle somewhere… where does the material we are losing from our muscles go to and in what form?
Cheers
Alec


(You've tried everything else; why not try bacon?) #2

The proteins we eat get broken down into their constituent amino acids and enter what @richard calls the “labile pool.” Some of the amino acids in the pool then get converted into glucose; some get formed into new proteins to repair/replace damaged proteins (i.e., autophagy), make hair and nails, and make blood cells (red and white corpuscles, etc); some remain in the labile pool; and some get broken down into ammonia and carbohydrate and the ammonia gets converted into urea and excreted. There are probably other things that happen, but these are the ones I can remember.