Analysis
Analysis
Deep-dives based on peer-reviewed studies.
Berberine · Metabolism
Berberine, the alleged "natural Ozempic": what the studies say
Berberine has real metabolic effects — and a false commercial comparison. What the RCTs show, and why the interaction risk matters more than you're told.
2026-08-18
3 min read
Ceramides · Skin longevity
Ceramides and the skin barrier: ingredient evidence versus product claims
The clearest case of the gap between 'the ingredient has evidence' and 'this product works'. Why the lipid ratio matters more than the word on the label.
2026-08-18
3 min read
Creatine · Performance and muscle mass
Creatine and aging: what human studies actually show
Creatine is cheap, unglamorous and better evidenced than most 'longevity' molecules. What it actually proves in older adults, and what it doesn't.
2026-08-18
3 min read
Sunscreen (SPF) · Skin longevity
Photoprotection is a longevity intervention (not skincare)
In a category full of hyped serums, the winner is boring: daily sunscreen is the only topical we grade A. Here's why.
2026-08-18
3 min read
NMN / NR · Cellular metabolism
NR vs NMN: which NAD+ precursor actually makes sense
NMN and NR are sold as rivals. In human data they are near-identical: both raise NAD⁺, neither has shown clinical benefit. What actually differs between them.
2026-08-18
4 min read
Vitamin D · Micronutrients
Vitamin D: who actually benefits (and who takes it pointlessly)
Vitamin D is unusual: both the enthusiasm and the disappointment are evidence-based. The value is concentrated in the deficient — and nearly absent in everyone else.
2026-08-18
3 min read
NMN · Cellular metabolism
NMN: What clinical studies really say in 2024
A critical review of human NMN studies: what is proven, what is still hypothetical, and why grade B is justified.
2026-06-15
4 min read