Why we publish this
Most supplement marketing is built on bold claims and thin evidence. We started ZENOA because we couldn't find a UK supplement we'd take ourselves — and the same applies to the content around supplements. Almost every "guide" online is either a product page in disguise or an AI-generated summary of three other AI-generated summaries.
The ZENOA Journal is our long-form output. Each piece reads through the actual peer-reviewed literature on a molecule, summarises what is solid, what is preliminary and what is hype, and links back to the primary sources so you can verify. Where the evidence is strong, we say so. Where it is weak, we say so. Where our products fit, we link transparently. Where they don't, we don't pretend they do.
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The Complete UK Guide to NMN: What the Research Actually Shows
NMN has gone from a Harvard biology paper to a Holland & Barrett shelf in roughly five years. The hype is loud, the marketing louder, and the actual peer-reviewed evidence more nuanced than either side wants to admit. We break down what the human studies (Igarashi 2022, Yoshino 2018+2021, Shade 2020) actually show — and what to look for on a UK label.
Lion's Mane: The Nootropic Mushroom Backed by Neuroscience
Hericium erinaceus has moved from East Asian medicine cabinets to the heart of the modern nootropic conversation. We explore what NGF (Nerve Growth Factor) actually is, why hericenones and erinacines matter, what the human studies (Mori 2009, Saitsu 2019) found and didn't find, and why extract ratios and standardisation matter as much as dose.
NAD+ Decline and Cellular Energy: A Practical Primer
NAD+ is one of the most consequential coenzymes in the human body — and one of the most age-sensitive. We map out what NAD+ does, why levels decline by ~50% between 40 and 60, what that means for mitochondrial function and DNA repair, and the realistic interventions (NMN, NR, NAD+ IV, lifestyle) that have evidence behind them.
Why Two Ingredients Beats Eight: The Filler Problem
Pick up almost any supplement bottle in a UK pharmacy and read the back. You'll typically find 5–8 ingredients per capsule, only one of which is the active. Magnesium stearate, silicon dioxide, microcrystalline cellulose, talc, titanium dioxide. These are flow agents, bulking agents and anti-caking agents — there to make manufacturing easier, not because they help you. We explain why we formulate without them.