Iron vs Omega-3

for cognition

Stronger evidence: Iron

Stronger effect: unknown

Safety: Omega-3 carries a serious interaction; Iron has none recorded.

For cognition, Iron has the stronger evidence grade.

grade C low certainty

improves attention/cognition when iron deficiency is present; no benefit if replete

18–65 mg/day, iron-deficient adults

not well studied very-low certainty

not adequately studied for cognition in healthy adults

sources: PMID:20000115