B vitamins are a group of eight essential water-soluble nutrients that act as coenzymes in numerous critical metabolic pathways, including energy production (ATP synthesis), DNA synthesis and repair, and methylation. Maintaining adequate levels is foundational for cellular health, preventing deficiencies that can impair neurological function, increase homocysteine levels (a risk factor for cardiovascular disease), and compromise overall vitality.
Verdict
Essential for foundational metabolic health; supplement to prevent or correct deficiencies.
HEALTHSPAN IMPACT
High Value
RISK LEVEL
Low
EVIDENCE GRADE
A
MONTHLY COST
$10 - $30
Protocol
- One capsule or tablet daily, typically with a meal, providing 100% or more of the Recommended Daily Allowance (RDA) for each B vitamin.
Flags
- High doses of Vitamin B6 (pyridoxine) can lead to peripheral neuropathy (nerve damage).
- High-dose niacin (B3) can cause skin flushing, itching, and potential liver stress.
- Folate (B9) supplementation can mask a Vitamin B12 deficiency, which can lead to irreversible neurological damage if unaddressed.
- Some B vitamins may interact with medications like methotrexate and certain anti-epileptic drugs.