Science
NAD+ Levels by Age: What Human Studies Actually Show
Do NAD+ levels really fall sharply as you age? Human studies tell a more complicated story. Explore the latest evidence across blood, muscle, brain and other...
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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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Science
Resveratrol at Walmart: What to Actually Check Before You Buy
Yes, Walmart sells resveratrol, in store and online. What actually varies is the form, the dose, and how honest the label is. A practical guide to...
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Science
What to Expect From NMN: Realistic Results From Human Studies
Human NMN trials show a clearer effect on NAD-related biomarkers than on day-to-day feelings. Here is what realistic results look like, what studies measured at common...
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Science
The David Sinclair NMN Claims: What Evidence Shows
David Sinclair popularized NMN for longevity - largely on mouse studies and his own daily use. Here is what he actually claims, what human trials show,...
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Science
Is NMN FDA-Approved? The Legal Status, Explained
No dietary supplement is 'FDA-approved.' But is NMN legal to sell? Yes - the FDA reversed its 2022 exclusion in September 2025. Here is NMN's U.S....
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Science
NAD+ Blood Test: Can You Measure Your Levels?
An honest look at whether you can test your NAD+ levels: what is measurable in research, why there is no validated consumer NAD+ blood test, and...
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Science
What Is Nicotinamide Riboside (NR)? A Clear Guide
Nicotinamide riboside (NR) is a vitamin B3-related NAD+ precursor. Learn how NR, NR chloride and NIAGEN differ, what human trials measure, and why age and pathway...
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Science
What Is NMN? A Plain-English Guide
NMN is a molecule your body converts into NAD+, the coenzyme behind cellular energy. A plain-English guide to what NMN is, how it works, and what...
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Science
Nicotinamide Riboside (NR) Benefits: What the Research Actually Shows
What nicotinamide riboside actually does, by the evidence: NR reliably raises NAD+ and is well tolerated in human trials, but the felt benefits are still being...
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Science
NMN Benefits: What the Research Actually Shows
What human NMN studies show about NAD+, physical function, insulin sensitivity, sleep and blood pressure, mapped by endpoint and population.
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Science
What Is Resveratrol? A Simple Guide
Resveratrol is a plant polyphenol found in grapes, red wine, and berries. Here's what it is, how it works, and the honest limits of the science.
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Science
NAD+ Benefits: What the Science Says
NAD+ is essential to cellular energy metabolism and NAD-dependent maintenance pathways. Human trials show that NMN and NR reliably raise NAD+, while selected studies have found...
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