Consensus Report

NMN & NAD+

2.3

Split Consensus

out of 5

Based on 29 episodes (52 hours analyzed) across the experts · Updated 2026-03-19

Stance update (2025): Attia has consistently strengthened his skepticism, moving NMN/NAD from 'unproven' to explicitly categorizing it as 'noise' on his evidence hierarchy.

On the record

Checked against the tape: 2026-03-19

29 · 52 h
episodes · hours
5 / 5
experts on tape
26
timecoded clips
8
voices on tape

Voices: Andrew Huberman, Peter Attia, Rhonda Patrick, Bryan Johnson, Mark Hyman · guests David Sinclair, Craig Koniver, Matt Kaeberlein

At a glance

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Dose
Form
Timing
Evidence
Agreement
1 of 5 experts agree · 4 open disagreements

Expert Positions

Andrew Huberman
Andrew Huberman
Takes It, But Not for Longevity
Peter Attia
Peter Attia
Categorizes as 'Noise'
Rhonda Patrick
Rhonda Patrick
Promising but Unproven in Humans
Bryan Johnson
Bryan Johnson
No Direct Coverage
Mark Hyman
Mark Hyman
Advocates for NAD Precursors

The Verdict

This is one of the most divisive topics among our 5 experts. Attia categorizes NAD supplementation as 'noise' on his evidence hierarchy, while Hyman actively advocates for NAD precursors as part of a longevity stack. Huberman personally takes NR and NMN for subjective energy but explicitly not for longevity. Patrick provides the most balanced scientific coverage, noting promising animal data but significant gaps in human evidence.

Where They Disagree

Attia classifies NAD as 'noise' while Hyman's guests recommend high-dose NMN (1000mg) as a core longevity supplement — a fundamental disagreement on the evidence threshold for recommendation.

Patrick notes that NMN and NR break down into nicotinamide, which can inhibit sirtuins — directly contradicting the rationale for taking NAD precursors to boost sirtuin activity.

+ 2 more disagreements in the full report

What the Tape Covers

26 clips across 22 videos

Where each expert stands on nmn & nad+, and the moment on the tape that shows it. Every timecode opens the source video at that second — check any of them yourself.

Andrew Huberman
Dr. Andrew Huberman Takes It, But Not for Longevity

Huberman has covered NMN/NAD+ extensively through two dedicated David Sinclair episodes and a personal AMA on longevity supplements. He personally takes NR (500mg) and NMN (1-2g) daily for subjective energy and uses NAD infusions occasionally for post-illness recovery. However, he explicitly states these are taken for perceived energy benefits rather than proven longevity effects. His Sinclair episodes cover the sirtuin pathway, epigenetic aging theory, and NMN as a NAD precursor in detail. A guest episode with Dr. Craig Koniver also discusses NAD+ for cellular energy production and mitochondrial health.

So the NAD pathway, as some of you may already know, is a pathway within all of our cells. This is a pathway that is highly active in young animals and humans. But all animals and humans across the entire lifespan make NAD in their cells. It's related to cellular energetics. That is the production of energy in cells. It has direct relevance to mitochondrial function and mitochondrial function to it. And that's a discussion unto itself. But suffice it to say that the pathway leading to NAD includes things such as NR and NMN. NR and NMN are considered by many to be precursors to NAD. OK, so why am I telling you all these acronyms?

▶ 06:18 · AMA #12: Thoughts on Longevity Supplements (Resveratrol, NR, NMN, Etc.) & How to Improve Memory

4 more clips

Peter Attia
Dr. Peter Attia Categorizes as 'Noise'

Attia is the most skeptical of our five experts on NMN/NAD+ supplementation. Across at least 8 episodes — including dedicated discussions with David Sinclair, Matt Kaeberlein, Nir Barzilai, and Rhonda Patrick — he has consistently questioned the evidence. In his landmark episode 300, he categorizes NAD as 'noise' on his evidence hierarchy, far below rapamycin ('promising'). He cites the ITP's failure to show lifespan extension with NR, the mixed and statistically insignificant human trial data for NMN, and questions whether oral precursors meaningfully reach target tissues. He also flags potential cancer risks from NAD precursors and notes that resveratrol is 'nonsense' based on available data.

…think that's very unlikely awesome well let's get into it and we kind of categorize the different things we'll talk about so there's themes to these sections and the First theme is geroprotective drugs molecules these are Ramy metformin NAD Resveratrol and so we'll start with Ramy but before we do do you just want to quickly remind people your definition of a j protective drug and kind of how you think about that yeah so gero protection really talks more broadly about mechanisms that Target um you know Hallmarks of Aging so a geroprotective drug would be a drug or a molecule that you're taking not because it necessarily provides benefit…

▶ 07:33 · 300-Special episode: Peter on exercise, fasting, nutrition, stem cells, geroprotective drugs, & more

6 more clips

Rhonda Patrick
Dr. Rhonda Patrick Promising but Unproven in Humans

Patrick provides the most scientifically comprehensive and balanced coverage of NAD+ biology among our five experts. She has a dedicated video on NAD+ in aging covering NR and NMN, plus extensive discussions with David Sinclair, Eric Verdin, and Judith Campisi. She explains NAD's critical role in energy metabolism, DNA repair (via PARP1), and sirtuin activation, and notes that NAD levels decline with age. However, she highlights important concerns: NMN may accelerate cancer growth in specific contexts, the breakdown of NAD boosters into nicotinamide can paradoxically inhibit sirtuins, human data is limited, and exercise and fasting naturally boost NAD levels. She considers NR the more well-studied precursor with better safety data.

6 more clips

Mark Hyman
Dr. Mark Hyman Advocates for NAD Precursors

Hyman is the most enthusiastic advocate for NAD precursors among our five experts. Across multiple videos and guest interviews, he frames NAD as essential for mitochondrial energy production, DNA repair, sirtuin activation, and glutathione synthesis. He hosted Dr. Andrew Salzman for a dedicated deep dive recommending high-dose NMN (1000mg) combined with ergothionine and resveratrol. Hyman includes NMN in his longevity supplement recommendations alongside urolithin A and polyphenols. He discusses NAD in the context of the hallmarks of aging, noting its role in activating the four key longevity switches (insulin signaling, mTOR, AMPK, and sirtuins).

…that first you want to avoid the things that cause DNA damage which is sugar processed food all that crap environmental toxins radiation by the way stress also will do it and second you can activate your DNA repair systems and the beautiful thing about the body is it has these innate healing systems it's got It's incredibly deep wisdom of what to do to heal repair and and regulate itself we've just interfered with those systems which is why we have so much disease doing that you can actually activate your DNA repair systems one of the ways is by activating your two ends for example with NAD or NR…

▶ 00:36 · How DNA Damage Adds Up

7 more clips

Quoted passages are the automatic transcript from the second the link opens, with mis-transcribed terms corrected and nothing else changed. A quote appears only where the expert recorded alone and the passage is about nmn & nad+ — where someone else was in the room, you get the timecode without a quote, because the tape does not record who said which line.

About This Analysis

This consensus report on NMN & NAD+ is based on 29 videos (52 hours analyzed) from five longevity experts: Andrew Huberman, Peter Attia, Rhonda Patrick, Bryan Johnson, and Mark Hyman. Each expert's position was independently analyzed from their published video content, including lectures, podcast episodes, and Q&A sessions with 640+ guests, 310+ of them scientists and physicians.

The full report includes 8 key findings, dosage and protocol details, expert deep dives with direct video citations and timestamps, risk considerations, and related supplement synergies.

Frequently Asked Questions

What do experts agree on about nmn & nad+?

This is one of the most divisive topics among our 5 experts. Attia categorizes NAD supplementation as 'noise' on his evidence hierarchy, while Hyman actively advocates for NAD precursors as part of a longevity stack.

Where do the experts disagree on nmn & nad+?

Attia classifies NAD as 'noise' while Hyman's guests recommend high-dose NMN (1000mg) as a core longevity supplement — a fundamental disagreement on the evidence threshold for recommendation. Patrick notes that NMN and NR break down into nicotinamide, which can inhibit sirtuins — directly contradicting the rationale for taking NAD precursors to boost sirtuin activity. Huberman takes NR and NMN daily for subjective energy while simultaneously acknowledging the lack of longevity evidence — illustrating the gap between personal experimentation and evidence-based recommendation.

How strong is the expert consensus on nmn & nad+?

The consensus on nmn & nad+ scores 2.3/5 — a split level of agreement across Huberman, Attia, Patrick, Johnson, and Hyman, based on their public videos.

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