NMN improves blood sugar and cholesterol
Mostly falseThe Claim
NMN is often promoted as a metabolic booster that improves insulin sensitivity, blood glucose and blood lipids.
Origin
Rodent studies of diet-induced diabetes and one small trial in prediabetic women showing improved muscle insulin sensitivity fueled the claim.
What Science Says
A 2024 meta-analysis of 8 RCTs (342 middle-aged and older adults, 250–2000 mg/day for 2–12 weeks) found no significant benefit of NMN on fasting glucose, fasting insulin, HbA1c, HOMA-IR or the lipid profile. The evidence base is small and mostly in relatively healthy adults, so short-term metabolic benefits have not been demonstrated.
Verdict
Mostly False