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interventions / NMN / blood sugar

Does NMN help blood sugar? (Grade — evidence)

Explore current source-reported research for this exact question. These records are separate from the synthesis below; they do not update its grade or establish a recommendation.

NMN: the recorded evidence reports no meaningful benefit for blood sugar. See the source and population limits.

Exact question reviewed

Population
middle-age/older adults, mainly non-diabetic
Intervention
NMN · 250-2000 mg/day, 14 days to 12 weeks in the reviewed trials
Comparator
not reported
Outcome
blood sugar
Time horizon
not reported

Bottom line. NMN: the recorded evidence reports no meaningful benefit for blood sugar. See the source and population limits. [1 other]

Direction
null
Magnitude
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
—
Certainty
low
Clinical meaning
no established threshold
Who it applies to
middle-age/older adults, mainly non-diabetic
Dose / form studied
250-2000 mg/day, 14 days to 12 weeks in the reviewed trials
Safety
not assessed
The one limitation
Claim-specific limitation details are not available in this public record.

Reviewed not reported · Evidence last changed · Open evidence record (version 0)

Grade
—
what does the grade mean?
Certainty
low
what does certainty mean?

Grade or certainty not assigned — evidence bucket does not yet warrant a graded claim.

Who it works for

Best-studied in middle-age/older adults, mainly non-diabetic. Recorded studied dose: 250-2000 mg/day, 14 days to 12 weeks in the reviewed trials.

Evidence

StudyDesignRoleCite
Effects of Nicotinamide Mononucleotide on Glucose and Lipid Metabolism in Adults: A Systematic Review and Meta-analysis of Randomised Controlled Trials.peer-reviewedsupportsPMID:39531138

Why this grade

Reasoning trace

The current record stores Grade — at low certainty and links 1 publishable source. A claim-specific domain-by-domain grading rationale is not available in this public record, so no reason for upgrading or downgrading is inferred here.

Audit and version

Claim ID
ec_b11-nmn-blood-sugar
Claim version
not reported
Governance
legacy, not verified
Clinician review
Not yet reviewed by a licensed clinician
Last evidence search
not reported
Last editorial review
not verified

Public receipt · Machine-readable claim · Methodology

Dose & form

Studied intake: 250-2000 mg/day, 14 days to 12 weeks in the reviewed trials.

How it stacks up for blood sugar

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.

Frequently asked

How long does NMN take to work for blood sugar?

This record does not report a studied onset time for NMN and blood sugar. Do not assume a typical timeframe.

What dose was used in studies of NMN for blood sugar?

The recorded studied dose for NMN and blood sugar is 250-2000 mg/day, 14 days to 12 weeks in the reviewed trials. This is a source detail, not a dose recommendation.

Does NMN work for blood sugar if I'm not deficient?

The recorded studied population is middle-age/older adults, mainly non-diabetic. This field alone does not show whether deficiency or baseline status changes the effect.

NMN or the next-best alternative for blood sugar?

See the compare block above for the head-to-head with the most-cited alternative. Grade + certainty differences matter more than any single trial.

Related

What this is — and is not

Evidence description
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.
Substrate's interpretation
The current reviewed record assigns Grade — at low certainty. A domain-by-domain rationale is shown only when recorded.
Discuss with a clinician
If you're on medication or have a condition that changes the calculus, bring the interaction & population blocks above to your pharmacist or prescriber before deciding.
Individualized medical advice
Not provided here or on any Substrate surface (API, agent tool, embed) — see YMYL policy.

Cite this page

Citation is encouraged. The proposed reuse license is CC-BY-4.0; status: pending-governance-ratification.

Plain-text citation
Substrate. Does NMN help blood sugar?. https://evidencebased.info/interventions/nmn/blood-sugar. Updated 2026-07-16.
BibTeX
@misc{substrate_entionsnmnbloodsugar,
  author = {Substrate editorial},
  title  = {Does NMN help blood sugar?},
  year   = {2026},
  url    = {https://evidencebased.info/interventions/nmn/blood-sugar},
  note   = {evidencebased.info}
}

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Current source-reported research

Membership uses admitted intervention and measured-outcome associations for this exact question. Different populations, preparations, comparators and timepoints remain separate. No pooling or update to the synthesis is asserted.