Protein & Nutrition Blog – Marmels

Bar chart comparing daily protein targets in grams per kilogram by age and activity level — Recommended Dietary Allowance, active adults in their 40s, strength-trained adults, and adults 50 and older

Protein & Nutrition Blog – Marmels

Protein Needs After 40: How Much You Actually Need

by Mo Mandegar, PhD on May 07 2026
Muscle starts thinning around 30, and the dietary inputs thatworked in your 20s no longer keep pace. After 40, the mathchanges in two ways: how much protein you need each day, and howoften you need it. Here is what current research recommends — andwhy distribution across the day matters as much as the dailytotal.