NMN in the Aging Research Timeline
The Wikipedia 'Timeline of aging research' references NMN as an NAD+ precursor, but the available excerpt provides no further context on which study or result is being discussed.
The Wikipedia article Timeline of aging research contains a sentence about NMN (nicotinamide mononucleotide):
One of these NAD+ precursor molecules is NMN
NMN is a precursor of NAD+, used to increase NAD+ availability and support cellular energy metabolism.
The same article also references metformin, rapamycin, mTOR and AMPK signaling, caloric restriction, and other areas of aging research. From the excerpt available to us, we cannot tell what context surrounds the NMN mention, or which study or result the article discusses at that point.
Sources
[1] Timeline of aging research - Wikipedia
This edge connects a broad historical survey of aging research to a specific NAD+ precursor compound via a precise biochemical citation, creating a useful opportunity to distinguish what NMN chemically is from what it has been clinically proven to do.