Supplement · Brain health technique
Multivitamin
Evidence grade: Mixed / Unclear
Broad-spectrum supplements containing a mix of vitamins and minerals, designed to fill common dietary gaps. Formulations vary widely in dosage, quality, and bioavailability.
- Practice
- Supplement
- Principle
- Nourishment
- Tactic
- Foundational Nutrients
- Health domains
- inflammation
- Evidence grade
- Mixed / Unclear
- Strength of evidence
- Medium
- Cost
- Low
- Effort
- Low
- Time commitment
- Low
How to practice Multivitamin
A basic daily multivitamin is reasonable “insurance” if diet is inconsistent. Choose one with doses near 100% of daily value, not megadoses. Take with food to improve absorption. Avoid overlap with separate high-dose single nutrients to reduce toxicity risk. For most, a nutrient-dense diet plus targeted supplementation outperforms relying solely on a multivitamin.
The evidence behind Multivitamin
Meta-analyses show modest or no effect on major disease or cognition in well-nourished adults, though daily use may help those with limited diet variety or increased needs. Benefits likely come from correcting subclinical deficiencies (B vitamins, D, zinc). Some formulas include poorly absorbed or excessive forms. Evidence is mixed because product quality and user baseline status vary.
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