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A simple guide that makes sense of the hundreds of studies showing why NAD matters.


400+ studies so you can go right to the source on issues that matter to you.


Quick answers to common questions about NAD.

Important Disclosures

1. Supplements Are Not Medicines. Health Supplements that replenish NAD levels, like nicotinamide riboside, are not intended to diagnose, treat, cure, or prevent any disease.

2. No Medical Advice. I am a lawyer, and a journalist, not a doctor, and I offer no medical advice. But I do follow the science, and I may be able to bring to your attention some interesting studies, and help clarify what the studies may may or may not be saying. And check with your physician -- your physician can look at this research, too.

3. Commercial Affiliations. I am a ChromaDex shareholder, and a marketing affiliate for Amazon and Rakuten. As a result, I will sometimes mention or recommend products that I endorse, like Tru Niagen, which I take every day. I may earn a small commission from qualifying purchases if you were referred directly from this site and completed a purchase. [Thank you!] You can read more about our advertising, privacy, and data collection policies here

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