Joseph Michael Bay wrote:

>
>
> But, sure. The body can make fat as well, so fat and carbohydrates
> and 10 of 20 amino acids are inessential. Eating a diet solely
> consisting of tryptophan, lysine, methionine, phenylalanine,
> threonine, valine, leucine, and isoleucine (histidine and arginine
> aren't really required in adults pretty much) -- the things that
> are essential -- would be a terrible idea.
>

That's not everything that's essential, by any means. You've left out
vitamins, minerals, and essential fatty acids. I suspect there are
other essential nutrients -- things we *must* have, and cannot create --
that we haven't yet identified, either.

So yeah, living on protein powder containing only the essential aminos
would be a very bad idea. Not very satisfying, either.