The RDA for protein is based primarily on nitrogen balance studies with college-age males (20-25 years old) and does not account for the metabolic changes that occur with aging beyond 40, when humans become significantly less efficient at handling protein and require higher intakes
causalpending
Speaker
Dr. Don LaymanEvidence Quote
“most of the data about the RDA is with uh College age guys... how does that relate to a 60 year old female probably not much at all... as we get older as we get Beyond 40... we've become far less efficient with protein”
Source
The ultimate protein episode: Nutrition scientist Don Layman, Ph.D. | mbg Podcast— the mindbodygreen podcastCreated: 8/12/2026, 6:22:02 PM
My Notes
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