Proof.Fit

Vitamin C

18 benefits mapped to clinical evidence across supplements.

Benefit Evidence

Main Effects
Antioxidant

Liver enzymes ↓ALT 63%

Antioxidant status ↑

Strong
34,634
Cell health

Antioxidant stress ↓, cell health

Barrier function/oxidation ↑, cell health

Strong
12,956
Vascular health

Endothelial function +FMD

Blood pressure −7 mmHg

Oxidative stress/CRP −30%

Strong
12,071
Healthy aging

Healthy aging: antioxidant↓

AMD/mortality: risk↓

Strong
55,971
Immune support

Lower IL-6; anti-inflammatory

+70% C, better immunity

Strong
36,122
Nutrient uptake

↑ Iron absorption +2-5x

↑ Hb/ferritin

Strong
8,927
Skin health

Pigment/brightening +1.3

Wound/scar healing improved

Anti-wrinkle/hydration +28%

Strong
5,334
Vitality

Energy, mood +vitality

Mood, fatigue +18

Strong
3,702
Energy & Fatigue

Fatigue↓, energy↑

O2/iron support

Mood/vitality↑, fatigue↓

Strong
4,135
Skin repair

Wound healing improved

Pain/inflammation reduced

-6.8 PUSH points

Strong
2,941
Skin appearance

Brightens, fades pigment

-26.8% roughness

Boosts collagen, firmness

Strong
1,401
Joints & tendons

Collagen synthesis +100%

Skin/wound healing -24%

Strong
1,564
Mood balance

Mood ↓, stress ↓

Mood ↓, anxiety ↓

Strong
1,663
Oral health

Bleeding↓, depth↓

Pigmentation↓, satisfaction↑

Moderate
865
Joint comfort

Pain/function relief

Collagen synthesis +30g

Moderate
14,982
Illness recovery

Fewer colds, less severe

Shorter illness, fewer days

Vitamin C raised levels

Moderate
617
Exercise recovery

Recovery: less damage

Recovery: better blood flow

Moderate
267
Hair & Nails

Hair improvement +12.5%

Patient-rated improvement +16%

Weak
225