Science
NAD+ Benefits: What the Science Says
What NAD+ actually does in your cells, whether it declines with age, and what supplement research really shows — explained honestly.
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Notes on cellular health, longevity and daily wellness
A calm, science-informed journal exploring cellular energy, healthy aging, ingredient education and refined daily routines for modern longevity.
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The Journal
Browse articles by topic or explore the latest editorial notes from CELLSHE.
Ingredients
NR vs NMN vs Niacin: NAD+ Precursors Compared
NR, NMN, and niacin are all NAD+ precursors — here's an honest, sourced comparison of the three and how to choose a quality one.
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Choosing
NMN Supplements: What They Are and How to Choose
What NMN is, how it supports NAD+ biosynthesis and cellular energy*, and the exact criteria—purity, third-party testing, and dose—for choosing a quality NMN supplement.
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Choosing
NAD+ Supplements: What Actually Works (and How to Choose One) in 2026
What NAD+ supplements are, what the human evidence actually shows, how NMN, NR and niacin compare, and how to choose a third-party-tested one.
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Science
What Is NAD+? The Coenzyme Behind Cellular Energy
What NAD+ is, what it does in your cells, why it declines with age, and how to support healthy levels — explained simply.
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Science
Resveratrol Benefits, Explained (and the Honest Limits)
What the science actually supports about resveratrol benefits — antioxidant and sirtuin activity, food sources, the bioavailability catch, and the honest limits.
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Routine
The Longevity Stack: What to Build First, Add Later, and Skip
A practical longevity stack for women in midlife: what belongs first, where creatine, protein, collagen, NMN and resveratrol fit, and what you can leave out.
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Ingredients
NMN vs NR: How These Two NAD+ Precursors Compare
If you have started researching NAD+ supplements, you have probably hit a fork in the road: NMN or NR?
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Science
Why NAD+ Matters: The Coenzyme Behind Cellular Energy in Midlife
If you've spent any time reading about longevity science in the last few years, you've probably come across one acronym more than any other: NAD+.
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