Sleep. Stress. Sourcing. Supplement industry sleights of hand. Written by clinicians and journalists. Edited like it matters.
The word has a real, narrow scientific definition. Almost every marketing claim that uses it does not meet that definition. Here is the actu…
A COA is the most important document a supplement brand will ever show you. Most consumers have never read one. Here is how to read yours in…
The cheapest magnesium supplement on the shelf is also the worst. The differences between forms are not subtle. Here is the absorption data …
A proprietary blend lets a brand list ingredients without disclosing how much of each is in the bottle. It is legal. It is also the single b…
The RDA is 600 IU. The clinically optimal range for most adults is closer to 4,000–5,000 IU. The reason for the gap is more interestin…
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