Better first improve their diets. Quoted from linked article: "Tryptophan is among the nine amino acids our body can't make and we must consume in foods like tu

Better first improve their diets. Quoted from linked article: "Tryptophan is among the nine amino acids our body can't make and we must consume in foods like turkey and soybeans so we can perform essentials like making protein." https://scienmag.com/major-research-initiative-explores-how-our-bones-and-muscles-age-new-ways-to-block-their-decline/ https://scienmag.com/major-research-initiative-explores-how-...