NAD+ boosters
NR, NMN, NAD+ drips and injections. Longevity & fitness.
- Verdict
- UnclearThere isn't enough human evidence to say either way.
- How sure
- Rung 1 · UnprovenLab or animal data only, or never directly tested in people.
The rung shows how sure the science is, not how big the effect is. How to read these ratings
Cancers affected
None studied in people
What the evidence shows
No human study has tested whether NAD+ boosters raise or lower cancer risk. Short human trials found they raise NAD+ in the blood without serious side effects, but haven't shown health benefits. In a 2019 mouse study (Nature Cell Biology), mice prone to pancreatic cancer that were given NMN developed more precancerous and cancerous growths; other researchers call it a small effect that hasn't been repeated.
What to do
There's no evidence they prevent cancer. If you have cancer, don't start them without your care team, since it isn't known whether they affect tumor growth.
Sources
Spotted an error? Tell us and we’ll check it against the sources.
Related
Every supplement we rated, or follow one cancer step by step: breast cancer, colorectal cancer, lung cancer and prostate cancer.