Do NAD+ Levels Decline with Age?

What is NAD+ and what role does it play in the aging process?

This is the first video in my NAD+ series. Stay tuned for:
• Can NAD+ Boosters Increase Lifespan and Healthspan? ( )
• Risks and Benefits of Nicotinic Acid (NA), a NAD+ Booster ( )
• Risks and Benefits of Nicotinamide (NAM), a NAD+ Booster ( )
• Risks and Benefits of Nicotinamide Riboside (NR), a NAD+ Booster ( )
• Risks and Benefits of Nicotinamide Mononucleotide (NMN), a NAD+ Booster ( )
• Lesser-Known NAD+ Boosting Supplements—Tryptophan, NADH, NMNH, and NRH ( )
• Risks of NAD+ Boosting Supplements ( )
• Which NAD+ Booster Is Best? ( )
• The Third Way to Boost NAD+ ( )

For more on aging, go to your local public library and check out my longevity book, How Not to Age ( ), available in print, e-book, and audio. (All proceeds I receive from the book are donated directly to charity.)

New subscribers to our e-newsletter always receive a free gift. Get yours here: .

Have a question about this video? Leave it in the comment section at and someone on the NutritionFacts.org team will try to answer it.

Want to get a list of links to all the scientific sources used in this video? Click on Sources Cited at . You’ll also find a transcript and acknowledgements for the video, my blog and speaking tour schedule, and an easy way to search (by translated language even) through our videos spanning more than 2,000 health topics.

Thanks for watching. I hope you’ll join in the evidence-based nutrition revolution!
-Michael Greger, MD FACLM

Captions for this video are available in several languages; you can find yours in the video settings. View important information about our translated resources:

• Subscribe:
• Donate:
• Podcast :
• Books:
• Shop:
• Facebook:
• Twitter:
• Instagram:

Leroy Johnson
 

  • @NutritionFactsOrg says:

    For more on aging, go to your local public library and check out my longevity book, How Not to Age, available in print, e-book, and audio. (All proceeds I receive from the book are donated directly to charity.)

    • @HealthAndCareTipsUSA says:

      This is fascinating! Are there effective ways to maintain or boost NAD+ levels as we age?

  • @ĐoànThịTràMyMy says:

    Very high quality content! I look forward to new videos from you! 💖😘

  • @NgôNguyệtMinhnh says:

    Hi. How do you typically interact with your audience outside of YouTube? 💕😚

  • @AndrewPawley11 says:

    I love this channel!

  • @VeganChiefWarrior says:

    Good thing I eat bread then didn’t know the only sufficient source of niacin was fortification and that I’d die if I didn’t eat it lol very scary.. praise the fortification gods for keeping our synthetic species alive, shout out to the lab crew our lives depend on you, we would all be in a sorry state without our supplements and fortifications

    • @pdblouin says:

      I think you misinterpreted the claims in the video. The video states that niacin is in basically everything we eat. But white flour bread was definitely causing deficiency before fortification. A large part of their total caloric intake was probably unfortified bread, though, otherwise it’s hard to imagine how they got pellagra.

    • @VeganChiefWarrior says:

      ​​Bread life, everyone must have been eating only white bread for breakfast lunch and dinner with nothing spread on it ​and no meat or vegetable it’s the only way, atleast they were plant based lol @@pdblouin

    • @VeganChiefWarrior says:

      Imagine eating plain white bread with no spread 3 times a day and no meat or veg lol atleast they were vegan

  • @danielalindan9642 says:

    Very happy to see dr. G. do NAD because it’s impossible to tell hype from fact with all the peddlers and influencers. I hope he will do cold exposure one day, way too much hype in that area too.

  • @bubblybull says:

    You said, you were going to tell us how to get NAD outside of supplements, but you didn‘t ? 🥲 Will you talk about that in the next video?

  • >