Proof.Fit

Iron

16 benefits mapped to clinical evidence across supplements.

Benefit Evidence

Main Effects
Energy & Fatigue

Hb/iron ↑

Fatigue ↓

Strong
298,244
Vitality

Hb/ferritin ↑

Anemia ↓ 47%

Iron usage ↓

Strong
211,745
Pregnancy support

Hb/ferritin ↑, anemia↓

+0.7 g/dL Hb

Maternal, neonatal support

Strong
464,978
Growth support

Growth+iron markers

+0.5–1.7 g/dL

Growth+anemia reductions

Strong
252,790
Focus & concentration

Iron stores↑

Hb↑ 1–4g/dL

Cognition↑

Strong
196,689
Endurance

Iron stores +Hgb

Endurance +VO2

Strong
130,210
Mental clarity

Iron repletion: clarity +

Cognition link: Hb/ferritin

Strong
70,890
Productivity

Hb+stores

anemia/fatigue

productivity gains

Strong
119,654
Exercise recovery

Iron stores↑; recovery faster

Exercise capacity↑; fatigue↓

Strong
35,134
Mood balance

Iron stores +59%

Anemia/Hb +2.7 g/L

Strong
58,975
Workout performance

Iron stores↑; faster Hb

Exercise capacity↑, VO2/lactate

Strong
29,594
Strength

Iron markers +59%; Hb

Exercise/functional gains +6.9%

Strong
23,421
Immune support

Immune support:+54% seroconversion

Immune support:fewer infections

Strong
34,265
Skin appearance

Skin-darkening ↓

Pigmentation ↓

Strong
12,705
Hair & Nails

Anemia/ferritin +Hb

Iron stores +Hb

Strong
6,361
Stress resilience

Lower stress +25%

Better stress resilience

Moderate
2,451