Expert Answer
Should you take NMN or NR for longevity?
Quick Answer
No expert consensus. Attia classifies NAD+ supplementation as 'noise.' Patrick warns NMN may accelerate cancer. Huberman takes both but admits it's for energy, not longevity. Hyman recommends high-dose NMN. Save your money unless you have a specific reason to experiment.
Split Consensus
on NMN / NAD+ overall
What Researchers Say
Most skeptical. Classifies NAD+ as 'noise' on his evidence hierarchy. Cites ITP failure to show lifespan extension with NR.
Leans toward NR for safety. Warns NMN may accelerate cancer. Notes both break down into nicotinamide which can inhibit sirtuins.
Takes NR (500mg) and NMN (1-2g) daily for subjective energy. Explicitly not for longevity.
“I take 500 milligrams of NR. I also and have separately taken an NMN supplement. I take sublingual NMN. So I'll take anywhere from 1 to 2 grams of NMN as a sublingual powder”
Andrew Huberman, on the record @ 08:42
Most enthusiastic. Recommends high-dose NMN (1000mg) with ergothionine and resveratrol.
Detailed Answer
This is the most divisive supplement in the database at 2.3/5 consensus. Attia classifies NAD+ as "noise" on his evidence hierarchy, citing the ITP failure to show lifespan extension with NR. Patrick warns NMN may accelerate cancer and notes both precursors break down into nicotinamide which can paradoxically inhibit sirtuins.
Huberman takes both NR (500mg) and NMN (1-2g) daily but is transparent: it's for subjective energy, not proven longevity. Johnson does not discuss either on the record in our corpus, so read Blueprint's position as unstated rather than opposed.
Hyman is the outlier advocate, hosting guests recommending 1000mg NMN. Exercise and fasting naturally boost NAD+ and should be prioritized over supplementation.
Related Questions
Is NMN legal to buy?
NMN's status is complicated. The FDA classified it as an investigational new drug. NR (as Niagen) remains widely available.
Do NMN or NR actually raise NAD+ levels?
Yes. Both raise blood NAD+ levels. The question is whether higher blood NAD+ translates to meaningful health benefits.
More Questions About NMN / NAD+
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