Proof.Fit

Vitamin B3

16 benefits mapped to clinical evidence across supplements.

Benefit Evidence

Main Effects
Blood circulation

Exercise +1.5 min

Blood flow/flow reserve

MACE -2.4%

Strong
13,833
Skin health

Pigment/texture +MASI

Barrier/hydration -TEWL

Strong
4,386
Nerve health

Cognitive/neurologic improvement

Nerve protection, -2.65 TSS

Strong
2,815
Brain health

Cognition/neurology improved

Ischemia reduced ~25%

NAD+ up, symptoms down

Strong
2,572
Cell health

NAD+ boost; cell stress

Inflammation/oxidative stress reduced

Cancer/skin control improved

Strong
3,032
Mental clarity

Cognitive recovery +14%

Stroke lesions -25%

Postop confusion -50%

Strong
1,659
Healthy aging

NAD+ metabolism: +139%

Skin aging, wrinkles, spots

Strong
1,302
Energy & Fatigue

NAD+↑, fatigue↓

Exercise tolerance↑, fatigue↓

Strong
1,708
Blood sugar

Early insulin +100%

Glucose iAUC -61%

Diabetes incidence -41%

Moderate
438
Immune support

UV immune protection

↓ IL-8, ↑NAD+

Moderate
224
Liver support

ALT/GGT down, fat no change

Responders +6.1%; GGT/ALP down

Weak
428
Cholesterol

HDL +11–23 mg/dl

Cholesterol ↓ (lipids)

Weak
81
Stress resilience

Stress system optimized

Stress resistance improved

Weak
266
Joint comfort

Less arthritis impact, +29%

Better mobility, +4.5°

Weak
72
Digestive support

Phosphorus/PTH drop

Ca×P decline

Weak
60
Appetite regulation

↑ appetite, +weight

+B3, +B12,D

Weak
40