Healthy Aging
How to Test Your Biological Age: The Options
Epigenetic clocks, PhenoAge blood scores, at-home kits, and free questionnaire tools — how each way to test your biological age works, what it costs, and how...
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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.
Routine
Should You Take NMN With Food or Empty Stomach?
Human NMN trials have used fasting, before-breakfast and after-breakfast dosing. None directly proves one meal condition is better. See the evidence map.
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Safety
NAD+ IV and Injections vs Oral: What to Know
NAD+ IV, injections and oral supplements are not interchangeable. Compare route-specific human evidence, side effects, absorption claims and whether any option has proven better outcomes.
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Ingredients
Trans-Resveratrol vs Regular: What's the Difference?
Trans-resveratrol vs regular resveratrol, explained: the two are the same molecule in different shapes, why the trans isomer is the studied, more stable form, and how...
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Choosing
Where to Buy NMN: A Safety and Quality Checklist
Where should you buy NMN? The storefront matters less than the proof. How to buy NMN online, on Amazon, or in-store, plus the checks that protect...
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Science
What Is Nicotinamide Riboside (NR)? A Clear Guide
Nicotinamide riboside (NR) is a form of vitamin B3 and a precursor to NAD+. A clear, evidence-based guide to what it is, how it works, and...
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Ingredients
Pterostilbene vs Resveratrol: What Human Studies Show
Rat pharmacokinetics drive pterostilbene’s famous bioavailability claim. Human evidence favors resveratrol, while pterostilbene’s main oral trial found lower blood pressure but higher LDL.
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Routine
How Long Does NMN Take to Work?
How long does NMN take to work? Human trials suggest blood NAD+ can rise within about 2–4 weeks, while physical, metabolic and subjective outcomes may follow...
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Routine
How and When to Take NMN
When should you take NMN? Human trials have used different schedules, and none proves one universal best time. See what the evidence says about morning vs...
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Ingredients
NMN and Resveratrol: Why They're Taken Together
Why NMN and resveratrol are so often paired: the NAD+ and sirtuin science behind the stack, what human research shows, and how people take them.
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Healthy Aging
The Hallmarks of Aging, Explained Simply
A plain-English guide to the 12 hallmarks of aging — what each one means, why scientists group them, and what the framework can and can't tell...
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Routine
NMN Dosage: How Much Do People Take?
Human NMN research centers on 250 to 1,000 mg/day, with higher doses also studied. See what 250, 500, 600, 900 and 1,000 mg trials actually found.
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