Browse all vitamins & nutrients articles
Ferrous bisglycinate, ferrous sulfate, ferric forms — which absorbs best? We compare the clinical evidence so you can choose the right form.
D3 or D2? We break down the clinical evidence on absorption, efficacy, immune effects, and safety so you can make the right call for your health.
Lion's Mane, Bacopa Monnieri, phosphatidylserine, Rhodiola Rosea, and citicoline have the strongest clinical evidence among nootropics. Here's the data.
Science-backed guide to choosing a B-vitamin complex: methylated forms, safe B6 doses, MTHFR variants, and who needs supplementation most.
Research-backed review of collagen supplements for skin, joints, and muscle. What 35+ RCTs and meta-analyses actually show, and where evidence falls short.
Evidence-based guide to zinc for immunity. Cold duration data, dosage by population, zinc form comparison, copper depletion risk, and who needs it most.
How to choose the best omega-3 supplement for heart health. EPA vs DHA, triglyceride vs ethyl ester forms, dosage by goal, and 2026 trial data.
Compare magnesium glycinate, citrate, threonate, and more. Evidence-based guide with bioavailability data, dosage tables, and a symptom-to-form framework.
Evidence-based comparison of vitamin D3 and D2. Clinical data from 3 meta-analyses, dosage tables, side effects, and drug interactions to help you choose.
