NMN

The reviewed records include NAD-related measures, walking performance and a reported health score. Each asks a different question and carries its own study context.

A change in a laboratory marker, a test score and everyday function are different outcomes. A statistically detectable result does not by itself tell us whether someone would notice a worthwhile difference.

Check the measured endpoint, comparison and study population. The full profile preserves effect estimates and the source's clinical-significance assessment, including when that assessment is not supplied.

The claim to test: A NAD or biological-age marker change demonstrates slower aging.

What the reviewed records say:

The gap: Target engagement, calculator-derived measures and secondary outcomes do not establish lifespan extension.

Durability, effects in other populations and healthy-lifespan outcomes need their own evidence.

Independent replication, meaningful human outcomes, longer follow-up and better safety reporting would make these results easier to interpret.

Target engagement, calculator-derived measures and secondary outcomes do not establish lifespan extension.