But is it not the case that one still has to consume some protein in the first place ?
Of course it is ! My point is that a sufficient amount of protein
is a basic requirement of a healthy balanced NORMAL diet. But the
source of the pool of amino acids from which we synthesize our own proteins can come from all the most mundane of foods ( meat, fish, eggs, vegetables, fruit etc etc ).
The constituents of these so-called "supplements" are still just proteins, and still just contribute to the general amino acid pool.
Yet, as with anything "designer", they will command enormously inflated prices !
One sentence from the article I quoted earlier on :
The blood contains amino acids at all times. Fasting does not clear them, and a high protein diet does not materially increase them. The body has a constant need for protein amino acids, and it keeps a fairly uniform balance.