B-complex vitamins are a group of eight essential water-soluble nutrients that act as critical cofactors in a vast array of metabolic processes. They are fundamental for converting food into cellular energy (ATP), synthesizing and repairing DNA, and regulating methylation patterns central to epigenetic health. Ensuring sufficiency through diet or supplementation can prevent age-related declines in these core cellular functions, particularly as absorption efficiency may decrease with age.
Verdict
A safe, foundational supplement for ensuring optimal metabolic and epigenetic function.
HEALTHSPAN IMPACT
Moderate
RISK LEVEL
Low
EVIDENCE GRADE
A
MONTHLY COST
$10 - $40
Protocol
- Take one capsule or tablet daily, typically containing 100% or more of the RDA for each of the eight B vitamins.
Flags
- High-dose B6 (pyridoxine) is associated with a risk of peripheral neuropathy.
- High-dose Niacin (B3) can cause uncomfortable skin flushing and, rarely, liver damage.
- Folate (B9) supplementation can mask the hematological signs of a Vitamin B12 deficiency, potentially delaying diagnosis of neurological damage.
- May interact with certain medications like methotrexate and anti-epileptics.