Selenium
17 benefits mapped to clinical evidence across supplements.
Benefit Evidence
Main EffectsStudies Total Participants
Healthy agingView 36 studies 185,690
Lower mortality −9%
Lower cancer deaths −13%
Cardiovascular deaths −49%
Strong
Heart healthView 28 studies 107,145
Cardio mortality -49%
Heart function, biomarkers
Cholesterol reduced ~12%
Strong
Pregnancy supportView 26 studies 7,938
Se status ↑, pregnancy outcomes
~20% lower complications
Antioxidants/GPx ↑, glucose↓
Strong
Nutrient uptakeView 28 studies 4,816
Selenium status ↑; uptake markers
Insulin/HOMA-IR ↓; uptake markers
Strong
Respiratory comfortView 14 studies 4,925
Asthma: better comfort
Ventilation: fewer days
Lung flow: slight gain
Strong