Fit Nutrition library

Category: <span>Protein</span>

Nutrients to Watch on a Plant-Based DietProtein

Nutrients to Watch on a Plant-Based Diet

B12, iron at 1.8x, zinc and phytate, calcium absorption, iodine and sea salt, omega-3 conversion under 15%, vitamin D and creatine — with NIH figures for each.

9 min read
Protein Quality: How Food Is Actually ScoredProtein

Protein Quality: How Food Is Actually Scored

How protein quality is scored: PDCAAS on US labels and why it is capped, DIAAS values for whey, beef, soy, wheat and rice, and whether proteins must be combined at a meal.

9 min read
Plant vs Animal Protein for Muscle: What the Trials ShowProtein

Plant vs Animal Protein for Muscle: What the Trials Show

Plant vs animal protein for muscle: what three meta-analyses found, why soy behaves differently from other plant proteins, and what happens when total protein is matched.

7 min read
How Much Protein Per Meal, and How OftenProtein

How Much Protein Per Meal, and How Often

Per-meal protein doses from the ISSN and ACSM position stands, how often to eat them, the pre-sleep casein figure, and why the 30 g absorption limit has no source behind it.

7 min read
Protein Shake for Weight Gain: How to Build a Calorie‑Rich, Muscle‑Friendly ShakeProtein

Protein Shake for Weight Gain: How to Build a Calorie‑Rich, Muscle‑Friendly Shake

Protein shake weight gain requires more than just protein powder. Learn how to build high-calorie, muscle-friendly shakes using whole milk, nut butters, and smart ingredients. Find out why.

4 min read
Amino Acid Profile: Which Foods Provide Complete ProteinsProtein

Amino Acid Profile: Which Foods Provide Complete Proteins

Complete amino acid foods contain all nine essential amino acids your body needs. Learn which foods qualify and how to meet your protein goals.

8 min read
Amino Acid Profile Comparison: Essential vs. Non-Essential Amino Acids for FitnessProtein

Amino Acid Profile Comparison: Essential vs. Non-Essential Amino Acids for Fitness

Essential amino acids profile explained: learn which amino acids build muscle, best food sources, and how they differ from non-essential amino acids. Discover how.

13 min read