Proof.Fit

Whey Protein

17 benefits mapped to clinical evidence across supplements.

Benefit Evidence

Main Effects
Muscle growth

MPS +40-100%

Lean mass +4kg

Strong
22,043
Immune support

Allergy/immune tolerance

+46.6% GSH

Strong
16,693
Body composition

More lean, less fat

+1.5 kg lean

Muscle-building gain

Strong
6,623
Nutrition source

Protein/lean mass +IGF-1

Satiety, glucose, insulin

Strong
12,192
Muscle maintenance

MPS +0.07%/h

Strength/mass +0.4kg

Fat loss/maintenance

Strong
4,846
Strength

Lean mass + strength

+1RM, +4kg LBM

CSA + strength

Strong
3,839
Metabolism

↓HOMA-IR, ↓glucose

↑insulin, ↑GLP-1

Strong
4,467
Energy & Fatigue

Lean mass + insulin

Fat loss + satiety

Strong
8,107
Weight management

Satiety intake ↓

Body fat/lean mass

+10% intake drop

Strong
4,502
Workout performance

Muscle gain/strength

+4.1kg LBM

Endurance/performance +18m

Strong
1,722
Exercise recovery

MPS/signaling ↑

Recovery damage ↓

Strong
1,160
Protein source

Whey ↑AA/MPS

Casein slower AA

Strong
923
Satiety

Hunger↓; GLP-1↑

Intake↓; fullness↑

Amino acids↑; satiety hormones↑

Strong
909
Appetite suppression

GLP-1↑ hunger↓

Amino acids↔ satiety↑

Insulin/gastric emptying↓ appetite↓

Moderate
707
Bone health

Less resorption, +BMD

IGF-1, PTH, BMD

Moderate
799
Hair & Nails

Acne: lesions -38.6%

Psoriasis/Eczema: improved scores

Moderate
492
Muscle soreness

Whey: lower soreness

-CK, less DOMS

Omega-3+whey: less soreness

Weak
90