NMN Research

7 New NMN Studies: What They Mean for NAD+

By Genevity+ | Updated May 2026

NMN research is moving fast. Here is what recent NMN and NAD+ studies suggest about cellular energy, sleep, movement, tissue repair, gut health, and where to start with a simple longevity routine.

Most people notice aging in small ways first.

The morning takes a little longer.
Workouts need more recovery.
Sleep happens, but it does not always feel like deep rest.
Your body still works, but it does not feel as effortless as it used to.

That is usually the part people can describe.

But underneath that, something quieter may be happening inside the cells.

One of the molecules scientists keep watching is called NAD+.

NAD+ helps your cells turn food into energy. It supports repair processes. It helps mitochondria do their job. It also connects to rhythm, metabolism, and healthy aging pathways.

The issue is that NAD+ tends to decline with age.

That is where NMN comes in.

NMN stands for nicotinamide mononucleotide. It is a precursor to NAD+, which means your body can use NMN to help make NAD+.

And recently, the research has become more interesting.

Not because NMN is magic.

It is not.

But because study after study keeps pointing back to the same bigger picture:

Healthy aging is energy, repair, sleep, movement, metabolism, gut health, and cellular rhythm working together.

And NAD+ seems to sit close to the middle of that system.

Here is the simple version of 7 recent NMN and NAD+ studies, what they found, what is still early, and what it means for your daily routine.

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1. A human study directly compared 3 NAD+ precursors

This is the strongest study to start with because it was done in humans.

A 2026 study published in Nature Metabolism compared 3 NAD+ precursors in 65 healthy adults: NMN, NR, and nicotinamide. The researchers found that after 14 days, NMN and NR increased circulating NAD+ levels, while nicotinamide had a shorter, more temporary effect. [1]

The same study also suggested something interesting about the gut.

The researchers found evidence that gut microbes may convert NMN and NR into nicotinic acid, another NAD+ precursor. That may help explain how NMN and NR raised circulating NAD+ over time. The study also reported changes in gut bacteria and short-chain fatty acids, which are gut-derived compounds linked to metabolic and immune health in broader research. [2]

That matters because the whole reason people take NMN is to support NAD+.

This study does not prove NMN reverses aging. It does not prove every person will feel a dramatic change. But it does give a clear human signal that NMN can move the marker it is meant to support.

Best Genevity+ fit:
Choose NMN Powder if you like flexible dosing.
Choose Liposomal NMN if you want the easy capsule format.

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2. A multi-study analysis found signals for walking speed and liver markers

Another recent analysis looked at randomized clinical trials on NMN and human aging-related outcomes.

The researchers reviewed 13 randomized clinical trials from 9 studies, with a total of 412 participants. The trials lasted from 4 to 24 weeks and used NMN doses from 250 mg to 1250 mg per day. [3]

The strongest signal was walking speed.

Across 8 trials, NMN was associated with improved gait speed. Grip strength was more mixed. Sit-to-stand results did not show a clear improvement. The analysis also found that NMN lowered ALT, a common liver enzyme marker, across 6 trials, while AST did not significantly change. [3]

The authors were careful. They noted that the studies were small, varied, and need longer, better-designed trials before making stronger claims. [3]

But movement depends on cellular energy. Walking speed, recovery, and physical function all sit close to the same system: mitochondria, NAD+, and how well cells keep producing energy as we age.

Promising? Yes.
Final proof? Not yet.

Best Genevity+ fit:
Start with NMN as the daily base.
Add TMG if you want methylation support alongside regular NMN use.

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3. A sleep study found NMN affected REM brain waves in aged mice

Sleep is more than rest.

It is cleanup.
Memory support.
Hormonal rhythm.
Brain recovery.
Repair time.

A 2026 Washington University study published in iScience found that NMN increased REM sleep-related brain waves in aged mice. The researchers also identified a population of neurons that appeared sensitive to NMN and connected to REM sleep regulation. [4]

This was an animal study, so we should not turn it into a human sleep claim.

But it is interesting because it adds to the bigger NAD+ story. Sleep and aging are deeply linked. NAD+ biology appears to connect with the body’s rhythm systems, including brain and sleep-related pathways.

That is a very different idea from forcing sleep with something sedating.

This is more about supporting the system underneath rest.

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4. A Max Planck study connected NAD+ to the heart’s biological clock

Your heart does more than beat.

It also follows a daily rhythm.

Researchers from the Max Planck Institute studied how aging affects the heart’s circadian clock in mice. They found that aging disrupted rhythmic gene expression in the heart. They also found that treatment with NR, another NAD+ precursor, helped reprogram those patterns and reversed age-related cardiac enlargement in aged female mice. [5]

Important note: this study used NR, not NMN.

So this is not an NMN-specific heart claim.

But it matters because NR and NMN both belong to the NAD+ precursor family. The study adds to the larger picture that NAD+ is involved in rhythm, gene expression, and age-related changes in important tissues.

This study suggests NAD+ may help keep some of those rhythms more organized, at least in animal research.

Human studies still need to catch up.

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5. NMN plus apigenin showed stronger tissue effects in aged mice

One new study looked at NMN combined with apigenin in aged mice.

Genevity+ does not currently sell apigenin, so this is not a product claim for our range.

But it is still useful because it shows where the science is going.

The study found that NMN plus apigenin had stronger effects than either compound alone in aged mice. The combination supported cartilage, bone, and muscle-related outcomes, increased NAD+, reduced cellular senescence markers, and improved physical capacity in aged mice. The researchers also suggested that gut microbiome changes may help explain part of the effect. [6]

This was in mice, not humans.

So the takeaway is not that everyone needs NMN and apigenin.

The better takeaway is this:

Aging is a network problem.

NAD+ support may matter more when it is paired with other support systems, like antioxidant defense, methylation, metabolism, and gut health.

Best Genevity+ fit:
NMN for NAD+ support.
Resveratrol for antioxidant support.
TMG for methylation support.
Berberine for metabolic support.

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6. A stomach-cell study linked NAD+ to cellular identity

This is one of the most interesting studies, but it needs careful language.

Researchers looked at gastric intestinal metaplasia, a precancerous condition where stomach cells begin behaving more like intestinal cells. They used human tissue, organoids, and 4 mouse models. They found that low NAD+ was linked to these cell identity changes, and that NMN helped reduce those changes in organoid and mouse models. [7]

The study also suggested that NAD+ may help maintain stomach cell identity through sirtuins and SOX2, a gene involved in keeping stomach cells acting like stomach cells. [7]

This does not mean NMN prevents cancer in humans.

It does not mean NMN treats cancer.

In fact, the article itself notes that once cancer is present, caution should be taken with NAD+ boosters. [7]

That is one of the reasons scientists are paying attention to NAD+ in aging research.

Anyone with cancer, a history of cancer, or a serious medical condition should speak with a qualified healthcare provider before using NAD+ boosters.

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7. NMN and 78c research explored NAD+ breakdown, CD38, and aging tissue

The last study looked at NMN with a compound called 78c in aged mice.

78c is a CD38 inhibitor. CD38 is an enzyme that can break down NAD+ and NMN. CD38 tends to become more relevant in aging and inflammation research because it may contribute to NAD+ decline. [8]

In this study, researchers from Kyoto University reported that CD38 was elevated in the eyelids of older adults and linked it to oil gland dysfunction in mice. They found that NMN enhanced the effect of 78c in restoring oil gland function in aged mice. [8]

Important note: this was a preprint at the time of reporting, which means it had not yet gone through full peer review. It also involved 78c, which Genevity+ does not sell. [8]

So we should not use this as an eye-health claim.

The useful takeaway is broader:

NAD+ decline is not only about making less NAD+. It can also involve losing NAD+ faster.

That is why scientists keep studying CD38, inflammation, and NAD+ breakdown in aging.

That makes the whole NAD+ story more complete.

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So, what do these 7 studies actually tell us?

They do not say NMN is a cure.

They do not say NMN can replace sleep, exercise, protein, sunlight, stress management, or real food.

They do not say every animal study will translate perfectly into humans.

But they do show a pattern.

NMN and NAD+ keep showing up around the same systems:

• Cellular energy
• Movement
• Sleep rhythm
• Tissue repair
• Gut metabolism
• Cell identity
• Inflammation and NAD+ breakdown

That is why NMN is not just another random supplement trend.

It sits near a root system your body already uses.

The goal is not to force your body to perform.

The goal is to give your cells better inputs so they can keep doing their quiet work.

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Where to start with NMN

Do not overcomplicate it.

If you are new to longevity supplements, start with NMN first.

Take it consistently for a few weeks.

That alone gives you a clean foundation before adding anything else.

Choose NMN Powder if:

• You like flexible dosing.
• You do not mind mixing it.
• You want control over how much you take.

Choose Liposomal NMN if:

• You prefer capsules.
• You want convenience.
• You want an easy daily format.

Both support the same main goal: NAD+.

The best option is the one you will actually take consistently.

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How to build a simple longevity stack

Once NMN is part of your routine, you can build around it.

NMN: the foundation

NMN supports NAD+ production.

This is the base of the routine.

Resveratrol: antioxidant support

Resveratrol supports antioxidant pathways and healthy aging processes.

It pairs naturally with NMN because NAD+ and antioxidant defense are both part of the bigger longevity picture.

TMG: methylation support

TMG is a methyl donor.

Methylation supports many body processes, including detox pathways, neurotransmitter balance, and normal DNA regulation. It also becomes especially relevant when using NAD+ support consistently.

Berberine: metabolic support

Berberine supports metabolic health.

For many people, healthy aging is not just about energy. It is also about metabolic steadiness, healthy glucose handling, and body composition support.

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The simple Genevity+ routine

Start here:

NMN Powder or Liposomal NMN

Then build based on your goal:

No chaos.

No overbuilt cabinet.

Just a few smart inputs that make sense together.

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The honest bottom line

The newest NMN research is exciting.

But the best version of the story is still honest.

NMN is not a miracle.
It is not a stimulant.
It is not a shortcut around the basics.

It is a way to support NAD+, one of the molecules your cells rely on for energy, repair, and healthy function.

The research is still growing. Some studies are human. Some are animal. Some are early. Some need larger trials.

But the pattern is getting harder to ignore:

NAD+ sits close to the quiet work of aging well.

And NMN is one of the simplest ways to support it.

Start with the foundation.
Stay consistent.
Let the quiet work build.

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FAQ

What does NMN do?

NMN helps your body make NAD+, a molecule involved in cellular energy production, repair processes, mitochondrial function, and healthy aging pathways.

Does NMN raise NAD+ in humans?

A human study published in Nature Metabolism found that NMN increased circulating NAD+ levels after 14 days in healthy adults.

Should I choose NMN Powder or Liposomal NMN?

Choose NMN Powder if you want flexible dosing. Choose Liposomal NMN if you prefer an easy capsule format. The best option is the one you will take consistently.

What should I take with NMN?

Many people pair NMN with Resveratrol for antioxidant support, TMG for methylation support, and Berberine for metabolic support. Start with NMN first, then build your stack based on your goals.

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Disclaimer

This article is for educational purposes only and is not medical advice. Genevity+ supplements are not intended to diagnose, treat, cure, or prevent any disease. If you are pregnant, nursing, taking medication, managing a medical condition, or have a history of cancer or serious illness, speak with your healthcare provider before starting NAD+ boosters or any new supplement.

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Sources

1. Christen et al., Nature Metabolism, 2026. Human comparison of NMN, NR, and nicotinamide as NAD+ precursors. Read study
2. NMN.com summary of the human NAD+ precursor comparison. Read summary
3. NMN.com summary of the NMN muscle and liver function meta-analysis. Read summary
4. NMN.com summary of Washington University NMN REM sleep brain-wave research in aged mice. Read summary
5. NMN.com summary of Max Planck NAD+ and heart circadian rhythm research. Read summary
6. NMN.com summary of NMN plus apigenin tissue regeneration research in aged mice. Read summary
7. NMN.com summary of NAD+ and gastric intestinal metaplasia research. Read summary
8. NMN.com summary of NMN plus 78c, CD38, and age-related dry eye research in mice. Read summary