Proof.Fit

Vitamin B1

17 benefits mapped to clinical evidence across supplements.

Benefit Evidence

Main Effects
Nerve health

Pain/symptoms ↓

Nerve sensation ↑

Neuropathy score ↓

Strong
2,609
Growth support

Growth +459g, z-scores

Infection fewer/shorter

Dietary thiamine gaps

Strong
3,438
Metabolism

B1 status ↑

Metabolism markers ↓

Moderate
1,021
Energy & Fatigue

Fatigue ↓, endurance ↑

VO2max/lactate better

Fatigue ↓, appetite ↑

Moderate
1,142
Vitality

Fatigue/endurance ↑

+26% endurance

Exercise lactate/NH3 ↓

Moderate
1,138
Blood sugar

↓ fasting/2h glucose

↔/↑ thiamine status

Moderate
813
Blood circulation

Improved perfusion, lactate ↓

Better cardiac output, urine ↑

Moderate
515
Mood balance

Mood symptoms -32%

Depression faster -1.9

Moderate
343
Brain health

Better memory, cognition

MoCA +3.7; mortality -24%

Moderate
300
Heart health

Pump function +5.3%

Diuresis, injury↓

Moderate
220
Healthy aging

Cognition/function −1.9

Thiamine/oxidative status

Moderate
245
Focus & concentration

Attention + memory

IQ subtests + recall

Weak
213
Stress resilience

Stress↓ sleep↓

Dialysis↓ −18%

Weak
120
Eye health

Corneal nerves + symptoms

Nerve length/width ↑

Neuromas ↓, OSDI ↓

Weak
199
Digestive support

Vomiting reduced, 33%→9%

Vomiting severity lowered, 33%→6%

Weak
160
Appetite regulation

↑ appetite, intake, weight

↓ fatigue, +10 mg/day

Weak
80
Muscle maintenance

Muscle maintenance: HGS +0.8 kg

Muscle maintenance: gait speed +0.07 m/s

Weak
66