Protein & Nutrition Blog – Marmels
Protein & Nutrition Blog – Marmels
How Much Protein Do You Need After 40?
by Mo Mandegar, PhD
on Sep 22 2026
The nutrition label prints one protein number for everyone: a Daily Value of 50 grams. After 40, the research points somewhere else entirely, 1.2 to 1.6 grams per kilogram of body weight, which is 82 to 109 grams a day for a 150-pound adult. Here is why aging muscle needs a larger signal, and where the shortfall actually sits in a normal day.
