How much protein should I eat per meal?
Reviewed and updated · Methodology
Schoenfeld & Aragon (2018) reviewed the evidence and concluded that 0.4 g/kg per meal across four evenly spaced meals is a reasonable upper bound to maximize muscle protein synthesis (MPS).
Older adults need slightly more per meal (~0.4–0.6 g/kg) because of anabolic resistance — younger tissue responds to less protein per dose.
Meals with 2.5–3 g of leucine (roughly 20–30 g of high-quality animal protein or a larger plant-based portion) reliably trigger MPS.
Spacing matters. Four 30 g meals out-performs two 60 g meals for lean-mass outcomes in most trials.
Is 30g protein per meal a hard upper limit?
No. The body can digest and use protein beyond 30 g per meal — excess is not "wasted." The 30 g figure refers to the dose that reliably maximizes the MPS signal in younger adults, not a cap on absorption.
What if I can only eat 3 meals per day?
Three meals of roughly 0.55 g/kg each still works well. Adding a high-protein snack between meals is an easy way to hit daily totals without force-eating.
- Schoenfeld & Aragon, 2018 — How much protein per meal? — Evidence for ~0.4 g/kg/meal across 4 meals
- ISSN Position Stand: Protein and Exercise — Peer-reviewed consensus: 1.4–2.0 g/kg for active adults
- NASEM Dietary Reference Intakes — Protein — Institute of Medicine DRI for protein (RDA 0.8 g/kg, AMDR 10–35%)
Nutrition data is verified against the product’s Nutrition Facts label and the brand’s official spec sheet. See our full ranking methodology for the scoring formula and inclusion rules.