Proof.Fit

Whey Protein

17 benefits mapped to clinical evidence across supplements.

Benefit Evidence

Muscle growth
Strong

MPS +40-100%

Lean mass +4kg

22,043 people
Immune support
Strong

Allergy/immune tolerance

+46.6% GSH

16,693 people
Body composition
Strong

More lean, less fat

+1.5 kg lean

Muscle-building gain

6,623 people
Nutrition source
Strong

Protein/lean mass +IGF-1

Satiety, glucose, insulin

12,192 people
Muscle maintenance
Strong

MPS +0.07%/h

Strength/mass +0.4kg

Fat loss/maintenance

4,846 people
Strength
Strong

Lean mass + strength

+1RM, +4kg LBM

CSA + strength

3,839 people
Metabolism
Strong

↓HOMA-IR, ↓glucose

↑insulin, ↑GLP-1

4,467 people
Energy & Fatigue
Strong

Lean mass + insulin

Fat loss + satiety

8,107 people
Weight management
Strong

Satiety intake ↓

Body fat/lean mass

+10% intake drop

4,502 people
Workout performance
Strong

Muscle gain/strength

+4.1kg LBM

Endurance/performance +18m

1,722 people
Exercise recovery
Strong

MPS/signaling ↑

Recovery damage ↓

1,160 people
Protein source
Strong

Whey ↑AA/MPS

Casein slower AA

923 people
Satiety
Strong

Hunger↓; GLP-1↑

Intake↓; fullness↑

Amino acids↑; satiety hormones↑

909 people
Appetite suppression
Moderate

GLP-1↑ hunger↓

Amino acids↔ satiety↑

Insulin/gastric emptying↓ appetite↓

707 people
Bone health
Moderate

Less resorption, +BMD

IGF-1, PTH, BMD

799 people
Hair & Nails
Moderate

Acne: lesions -38.6%

Psoriasis/Eczema: improved scores

492 people
Muscle soreness
Weak

Whey: lower soreness

-CK, less DOMS

Omega-3+whey: less soreness

90 people