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Brad Stanfield@bradstanfieldmdX

My response to David Sinclair's statement regarding the FDA ban on NMN supplements (a ban caused by David's company, Metro Biotech) TLDR

what it claims

Do not get distracted by the controversies surrounding NMN; instead, focus on the fundamental pillars of longevity: diet, exercise, sleep, and a sense of purpose.

holds up

This advice aligns with the current scientific consensus in gerontology, which considers lifestyle to be the most powerful lever for metabolic health and longevity.

noli's read

This advice aligns with the current scientific consensus in gerontology, which considers lifestyle to be the most powerful lever for metabolic health and longevity. Lifestyle interventions (a balanced diet, regular physical activity, and sleep hygiene) are supported by a vast body of observational literature and numerous meta-analyses showing a significant reduction in the risk of chronic diseases. Unlike supplements such as NMN, which are the subject of active research (early clinical trials in humans, but results on human lifespan remain limited), lifestyle fundamentals have robust and established proof of efficacy. Dr. Matt Kaeberlein and Dr. Morgan Levine, cited by the creator, are recognized experts who advocate for a pragmatic approach focused on 'biological health' rather than miracle solutions. The advice is therefore a sound invitation not to overestimate the impact of supplements compared to proven basics.

the sources

  1. 1Martens CR, Denman BA, Mazzo MR, et al. 2018
  2. 2Elhassan YS, Kluckova K, Fletcher RS, et al. 2019

Claimed by Brad Stanfield. Noli grades the claim, never the person.

Decoded by Noli · July 18, 2026 · the original post

What the graded evidence says

Evidence
D
Effect
blood/muscle NAD+ metabolome vs. clinical outcomes (function, metabolism, longevity) — NR ~1000 mg/day raised NAD+ ~60% in healthy older adults (Martens, n=24 crossover) and augmented the aged muscle NAD+ metabolome (Elhassan, n=12) — but with only exploratory signals (a modest blood-pressure hint; anti-inflammatory cytokine shifts) and no proven functional or longevity benefit. No RCT evidence for hair/nail growth.
Measured on
healthy middle-aged and older adults; small trials (n=12-24), short duration

What’s uncertain

These raise NAD+ convincingly; the leap from 'higher NAD+' to 'you age slower or feel better' is unproven in humans. Longevity, energy and hair/nail claims are marketing ahead of the evidence.

Brad Stanfield in the Register30 claims graded · solidity 90/100See their record →

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