Protein Requirements After 40: What the Evidence Says
The protein RDA of 0.8 g/kg was built to prevent deficiency in the average adult, and two expert consensus groups put the figure for healthy older adults 25 to 50 percent higher.
Niche
Nutrition
Protein, micronutrients, supplements, and how to read the evidence behind a label.
How to Read a Supplement Label: What the Law Requires
US law does not require FDA approval before a supplement is sold, which shifts most of the verification burden onto the label itself and onto the person reading it.