🧪 Supplement
nad+ precursors (nmn, nr)
NMN/NR longevity supplements. They reliably raise blood NAD+, but translating that into improved physical function or healthspan in humans is contested — the biomarker moves, the outcomes haven't followed.
1 well-supported · 0 disputed. This shows how settled each sub-question is, not whether nad+ precursors (nmn, nr) is "good." Direction lives in each claim below.
The 2 claims about nad+ precursors (nmn, nr)
Each keeps its own verdict — we never average them away.
Do NMN or NR supplements raise NAD+, a key cell-fuel molecule?
Strong support Yes — they reliably raise blood levels in trials, but that is not a proven health benefit.
Do NAD+ booster supplements improve fitness?
Insufficient Unclear — evidence is mixed to negative; better studies find no real strength or endurance benefit.
Educational only, not medical advice. Hub descriptions are curated for honesty; see the methodology.