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Nutrition
intermediate
Very Strong Evidence

Protein Target (1.6-2.2g/kg)

Hit 1.6-2.2g protein per kg bodyweight daily across 3-5 meals. The single most important nutritional target for muscle preservation, satiety, and healthy aging.

Time
Meal planning
Cost
$20-50
Equipment
Food scale (optional but helpful)
Min. Trial
4-8 weeks

Dosage & Timing

Duration
Ongoing
Frequency
Daily
Best Time
anytime

Evidence Strength

5/5 — Very Strong

Extremely strong evidence. Meta-analyses consistently show 1.6g/kg as the threshold for maximal MPS benefit. Higher end (2.2g/kg) during caloric deficit.

Overview

Consume 1.6-2.2g of protein per kg of body weight per day, distributed across 3-5 meals with at least 30-40g per meal to maximize muscle protein synthesis. This is the most impactful nutritional intervention for body composition, satiety, and aging.

How To Do It

1

Calculate your target

Multiply your body weight in kg by 1.6-2.2. Example: 80kg × 2.0 = 160g/day.

2

Plan 3-5 protein-rich meals

Aim for 30-50g protein per meal. Include a source at every meal.

3

Prioritize whole food sources

Meat, fish, eggs, dairy, legumes. Supplements (whey) to fill gaps.

4

Track for 2 weeks

Use an app to verify you're hitting targets, then transition to intuitive eating.

The Evidence

Each claim is linked to its source study. Confidence reflects the study design — systematic reviews and RCTs rank highest.

Systematic Review and Meta-analysis
High Confidence

Effect of protein supplementation on resistance training-induced gains

Protein supplementation augmented lean mass and strength gains with resistance training.

Primary Literature

Systematic Review and Meta-analysis:Effect of protein supplementation on resistance training-induced gains (https://pubmed.ncbi.nlm.nih.gov/28698222/)

Who Popularized This

Layne Norton
Don Layman
Peter Attia
Gabrielle Lyon

Interactions & Warnings

Contraindications

  • Severe kidney disease (consult nephrologist)

Interactions

  • Essential complement to resistance training

Measurable Outcomes

Improved body composition
Better satiety between meals
Strength progress in the gym

Equipment Needed

  • Food scale (optional but helpful)
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