Glossary
Protein
Updated 2026-07-01By Chris RichardsAll terms
Definition
Protein is one of three macros — often the first target people lock after calories.
Definition
Dietary protein provides amino acids used for tissue repair and many bodily functions. Higher-protein patterns often improve fullness during a deficit.
Sources
- [1] Acceptable Macronutrient Distribution Range (protein 10–35% of energy; RDA 0.8 g/kg) — National Academies of Sciences, Engineering, and Medicine — Dietary Reference Intakes
General nutrition information, not medical advice. Calorie and macro targets are estimates — talk to a doctor or a registered dietitian before changing your diet, especially if you are pregnant, managing a health condition, or have a history of disordered eating.
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