Blog
News, research and guides
348 articles from our editorial and science team.
ResearchLongevity Vitamins: Which Supplements Actually Have Real Scientific Evidence Behind Them
Every supplement shelf promises a longer life in every capsule, but the hard data from large clinical trials tells a far more measured story. We go through which vitamins genuinely extend healthy lifespan in people with a real deficiency, and which — despite their popularity — have no supporting evidence at all, or worse, evidence of no benefit.
AKdr Anna Kowalczyk15 min
August 20, 2026
ResearchVitamin D3 or D3 + K2? What the Research Says About Combining Them
Vitamin D3 is the most commonly supplemented nutrient in Poland, and more and more products are now pairing it with vitamin K2. We check whether that combination is actually backed by science, or mostly a marketing hook.
PZdr Piotr Zieliński9 min
August 18, 2026
ResearchCreatine Monohydrate or HCl? Do the Pricier Forms Actually Make Sense
Monohydrate, HCl, malate, buffered creatine — the supplement shelf keeps growing with more options at higher prices. We check whether the newer forms actually outperform the oldest, best-studied one: plain monohydrate.
PZdr Piotr Zieliński9 min
August 18, 2026
ResearchTRT and the Prostate: Does Testosterone Increase Prostate Cancer Risk?
For eighty years, medicine believed testosterone 'fed' prostate cancer, and that any rise in it was dangerous. Newer evidence forces a major narrowing of that rule — but not in the same way for every man.
PZdr Piotr Zieliński12 min
August 15, 2026
ResearchWhat we now know about NMN and longevity — a review of human studies
NMN, a precursor of NAD+, has for years been one of the most hotly debated supplements in the biohacking community. We look at what the latest clinical trials in humans show, as distinct from earlier studies in mice.
MNMichał Nowak7 min
August 11, 2026
ResearchCreatine and the Brain: What a New Meta-Analysis Shows About Cognitive Function
For decades, creatine has been associated mainly with the gym, but a growing body of research suggests its role in the brain — an organ with enormous energy demands — may be just as interesting as its role in muscle.
MNMichał Nowak7 min
August 4, 2026