Written by the Nuvirox Research Team
- "Inflammaging" — chronic low-grade inflammation with age — is genuinely linked to NAD+ decline, partly through an enzyme called CD38 that consumes NAD+.
- NR supplementation has produced anti-inflammatory signatures in aged human muscle, which is suggestive but not the same as treating inflammation.
- One honest caution: a study found that oral NMN drove an aging-specific kidney inflammation in mice, a reminder the story isn't uniformly positive.
Short answer: the NAD+–inflammation link is mechanistically solid, but the human supplement evidence is early and mixed — and at least one signal points the wrong way. NAD+ decline and chronic inflammation do travel together with age, and that connection is one of the more scientifically grounded reasons people are interested in NAD+. But "linked to inflammation" is a long way from "a capsule reduces it," and honesty requires noting the data isn't all reassuring.
What is 'inflammaging,' and where does NAD+ fit?
As we age, many people develop a persistent, low-grade inflammatory state — not the acute redness of an injury, but a chronic background hum of immune activation. Researchers call it "inflammaging," and it's associated with many age-related conditions [1].
NAD+ sits at the center of this in a specific way. An enzyme called CD38, found heavily on immune cells, ramps up with age and inflammation — and CD38's job involves consuming NAD+. So you get a self-reinforcing loop: inflammation raises CD38, CD38 burns through NAD+, falling NAD+ impairs the very repair and signaling functions that might otherwise keep cells healthy [1].
This is part of why NAD+ decline isn't just a passive consequence of aging — it's actively driven by the inflammatory enzymes that increase as we get older. We dig into the age side of this in our piece on whether NAD+ really declines with age.
What human studies actually show
Supportive signal: NR shifted muscle toward an anti-inflammatory profile. In a controlled study of aged adults, three weeks of nicotinamide riboside raised the muscle NAD+ metabolome and induced what the authors described as anti-inflammatory transcriptomic signatures — changes in gene-expression patterns associated with lower inflammation [2]. That's a real, well-conducted finding.
But notice what it is and isn't. It's a change in molecular signatures, not a demonstration that participants' inflammatory disease, pain, or symptoms improved. Promising biology, modest claim.
The honest counterweight: more NAD+ isn't automatically anti-inflammatory. In a 2024 study, oral NMN supplementation drove an aging-specific inflammation in the kidneys of mice, apparently from accumulation of a downstream metabolite [3]. It's a preclinical finding, and mice aren't people — but it punctures the assumption that pushing NAD+ precursors up is uniformly calming to the immune system. Biology is context-dependent, and tissue matters.
Put together, the fair reading is: the NAD+–inflammation relationship is real and bidirectional, NR can nudge inflammatory gene signatures in a favorable direction in muscle, and yet there's a genuine signal that more isn't always better. This is an active research area, not a settled benefit.
What NAD+ won't do
It won't treat an inflammatory disease — conditions like rheumatoid arthritis or inflammatory bowel disease are medical problems requiring medical care, and no NAD+ supplement is a therapy for them. It won't reliably lower a high CRP or other clinical inflammation marker; that hasn't been demonstrated. If you have symptoms of significant inflammation — persistent joint swelling, unexplained fevers, ongoing pain — see a doctor rather than reaching for a supplement, because those warrant a real workup.
Frequently asked questions
Does NAD+ reduce inflammation in the body?
It's linked to inflammation through enzymes like CD38, and NR has shifted anti-inflammatory gene signatures in muscle. But no trial shows an NAD+ supplement reduces clinical inflammation or treats an inflammatory condition. The mechanism is real; the proven benefit isn't established.
What is CD38 and why does it matter?
CD38 is an enzyme that increases with age and inflammation and consumes NAD+. It's a major reason NAD+ falls as we get older, and it links the immune system directly to NAD+ levels. Some researchers study CD38 inhibitors for exactly this reason.
Could an NAD+ supplement ever make inflammation worse?
A 2024 mouse study found oral NMN drove kidney inflammation specific to aging, via a metabolite buildup. That's preclinical and specific, not proof of harm in people — but it's an honest reason not to assume more NAD+ is always anti-inflammatory.
Is the resveratrol or quercetin in some formulas relevant here?
Those polyphenols are studied alongside NAD+ pathways and inflammation in their own right, though the human evidence is similarly preliminary. We cover one of them in our article on why quercetin appears in NAD+ formulas.
Why we formulated NAD+ Restore
We formulate NAD+ Restore around cellular-health support, not as an anti-inflammatory treatment — that framing would overstate the evidence. NAD+ Restore is built around 500 mg of nicotinamide riboside chloride (NR) — one of the two most-researched NAD+ precursors, within the dose range used in published human trials.
It pairs NR with 150 mg trans-resveratrol (from Japanese Knotweed) and 50 mg quercetin (from Sophora japonica) — polyphenols studied alongside NAD+ pathways for cellular health support — plus 10 mg galactomannans from fenugreek to support absorption.
It comes with a 60-day money-back guarantee — long enough to actually evaluate it the way the research says you should.
Learn more about NAD+ Restore →Why 'linked to inflammation' is easy to over-read
Inflammation is involved in nearly every chronic disease, which makes it a magnet for supplement claims — if you can connect an ingredient to inflammation, you can imply it helps with almost anything. That's precisely why the bar for evidence should be higher here, not lower. A molecular signature shifting in a favorable direction in muscle tissue is a legitimate finding, but it's several steps removed from a person's arthritis, gut inflammation, or cardiovascular risk actually improving.
The CD38 story is genuinely one of the more interesting threads in NAD+ biology, and it may yet lead somewhere clinically useful — researchers are actively studying CD38 inhibitors. But "interesting and actively researched" is an honest description, and "reduces inflammation in your body" is not, at least not yet. Holding both ideas at once is the accurate position.
The bottom line
NAD+ and inflammation are genuinely connected, and the CD38 story is one of the more compelling threads in NAD+ science. NR can shift muscle toward anti-inflammatory gene signatures — but that's molecular, not clinical, and one preclinical study is a real reminder that more NAD+ isn't always calming. Treat this as live research, not a reason to expect a supplement to fix inflammation. For the related aging angle, see whether NAD+ declines with age, and for the sirtuin side, what sirtuins actually have to do with NAD+ supplements.
References
- Covarrubias AJ, Perrone R, Grozio A, Verdin E. NAD+ metabolism and its roles in cellular processes during ageing. Nat Rev Mol Cell Biol. 2021;22(2):119-141. doi:10.1038/s41580-020-00313-x. PMID: 33353981.
- Elhassan YS, Kluckova K, Fletcher RS, et al. Nicotinamide riboside augments the aged human skeletal muscle NAD+ metabolome and induces transcriptomic and anti-inflammatory signatures. Cell Rep. 2019;28(7):1717-1728.e6. doi:10.1016/j.celrep.2019.07.043. PMID: 31412242.
- Kiss T, et al. Metabolite accumulation from oral NMN supplementation drives aging-specific kidney inflammation (preprint). bioRxiv. 2024. doi:10.1101/2024.04.09.588624.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. This article is for informational purposes only and is not a substitute for professional medical advice.