NMN: what the evidence actually shows

surging NMN — anti-aging hype far ahead of any human outcome data

Reviewed by Substrate editorial, Independent research collective

Evidence by outcome

longevity / agingnot well studiedvery-low certainty— raises NAD+ biomarkers; no human evidence it extends lifespan or healthspan

energy / fatiguenot well studiedvery-low certainty— not adequately studied for fatigue/energy outcomes in humans

blood sugarstudied, no effectlow certainty— Review of 8 human RCTs (342 mainly non-diabetic middle-age/older adults, 14 days to 12 weeks, 250-2000 mg/day): NMN supplementation showed no significant benefit on fasting glucose, fasting insulin, HbA1c, insulin resistance (HOMA-IR), or lipid profile. Short-term NMN supplementation did not meaningfully improve glucose control in this population.

People say · Evidence shows

“NMN reverses aging”

aheadextrememarketing claim

What it probably doesn't do

NMN for blood sugar — Grade —, Review of 8 human RCTs (342 mainly non-diabetic middle-age/older adults, 14 days to 12 weeks, 250-2000 mg/day): NMN supplementation showed no significant benefit on fasting glucose, fasting insulin, HbA1c, insulin resistance (HOMA-IR), or lipid profile. Short-term NMN supplementation did not meaningfully improve glucose control in this population..

Grade history

No grade changes yet. Initial grade assigned; re-reviewed on every 6 months (Grade C+). Methodology v1.

Re-review cadence: every 6 months (Grade C+) · methodology v1.

By outcome — the money pages

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Is NMN hype?

sources: PMID:39531138

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Reuse under CC-BY 4.0 with attribution to evidencebased.info.

Plain-text citation

Substrate. NMN: what the evidence actually shows. https://evidencebased.info/interventions/nmn. Updated 2026.

BibTeX

@misc{substrate_infointerventionsnmn,
  author = {Substrate editorial},
  title  = {NMN: what the evidence actually shows},
  year   = {2026},
  url    = {https://evidencebased.info/interventions/nmn},
  note   = {evidencebased.info}
}