Health
Vitamin D Supplements: A Reality Check on Who Actually Benefits
Large trials with more than 30,000 participants found vitamin D pills do little for people who are not deficient, reshaping decades of assumptions.
Jan 20, 2026
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21 stories for“deficiency”
Health
Your HbA1c Is an Average of Your Red Blood Cells, Which Is Why It Sometimes Lies
The test everyone treats as the verdict measures sugar stuck to haemoglobin over the life of a red cell. Anything that changes how long those cells live changes the result, and several of those conditions are common across this region.
Jul 13, 2026
Health
Metformin as an Anti-Aging Drug: The Claims Versus the Trial Data
Biohackers take metformin to slow aging, but the trial designed to actually prove that, TAME, still has not finished enrolling.
May 6, 2024
