Taking NMN might help slow aging because it boosts a molecule called NAD in your blood, but we don’t actually know yet if it truly slows aging — right now it’s just based on a possible clue from blood tests.

Taking NMN supplements for a few months might boost a key molecule in your blood that's involved in keeping your cells healthy as you age — but we don’t know yet if it actually slows aging.

Giving older mice supplements like NR or NMN might help their energy levels, reduce inflammation, and improve how well their bodies work—but the results aren't the same in every study.

Giving male mice a supplement called NMN for a year seems to help keep their muscle, fat, and liver genes from changing as they age — especially in muscle and fat, where most age-related gene shifts didn’t happen.

Taking NMN supplements probably won't help improve blood sugar or cholesterol levels in most middle-aged or older people who are already fairly healthy.

Even though taking NR or NMN boosts a molecule called NAD+ in the blood, we don’t actually have solid proof it makes people stronger, healthier, sharper, or more energetic.