Proof.Fit

Iron

16 benefits mapped to clinical evidence across supplements.

Benefit Evidence

Hb/iron ↑

Fatigue ↓

298,244 people
Vitality
Strong

Hb/ferritin ↑

Anemia ↓ 47%

Iron usage ↓

211,745 people

Hb/ferritin ↑, anemia↓

+0.7 g/dL Hb

Maternal, neonatal support

464,978 people

Growth+iron markers

+0.5–1.7 g/dL

Growth+anemia reductions

252,790 people

Iron stores↑

Hb↑ 1–4g/dL

Cognition↑

196,689 people
Endurance
Strong

Iron stores +Hgb

Endurance +VO2

130,210 people

Iron repletion: clarity +

Cognition link: Hb/ferritin

70,890 people

Hb+stores

anemia/fatigue

productivity gains

119,654 people

Iron stores↑; recovery faster

Exercise capacity↑; fatigue↓

35,134 people

Iron stores +59%

Anemia/Hb +2.7 g/L

58,975 people

Iron stores↑; faster Hb

Exercise capacity↑, VO2/lactate

29,594 people
Strength
Strong

Iron markers +59%; Hb

Exercise/functional gains +6.9%

23,421 people

Immune support:+54% seroconversion

Immune support:fewer infections

34,265 people

Skin-darkening ↓

Pigmentation ↓

12,705 people

Anemia/ferritin +Hb

Iron stores +Hb

6,361 people

Lower stress +25%

Better stress resilience

2,451 people