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An evidence-based guide to Europe's vitamin D crisis covering latitude science, D3 vs D2, the D3+K2 synergy, optimal blood levels, testing options, and pra

A comprehensive, evidence-based guide to supplement-drug interactions covering CYP450 enzymes, blood thinners, antidepressants, blood pressure and diabetes

"Supplements are unregulated." "More is better." "Natural always means safe." You've heard these claims a thousand times. Here's what the evidence actually

You could take the world's most expensive supplement — but if your body can't absorb it, you're just making expensive urine. Here's how bioavailability wor

Taking the right supplement at the wrong time can slash its effectiveness. Learn when to take vitamins, minerals, adaptogens, and other supplements — with

Magnesium is involved in over 300 reactions that affect running performance — from ATP energy production to muscle relaxation and sleep quality. Here's wha

An evidence-based comparison of whey and plant protein for muscle growth, digestion, taste, sustainability, and price — with a decision framework to help y

Do greens powders really replace vegetables? We compare AG1, MADMONQ Greens, and Orangefit Greens on ingredients, cost, and science — and explain who actua

Caffeine is the most evidence-backed performance supplement in sport — but most runners get the dose, timing, or tolerance management wrong. Here's how to