
Supplements
Iron and Ferritin: When Supplements Help and When They Harm
Iron deficiency starts long before anaemia, ferritin drops first and lies during inflammation, and iron taken without testing can do real damage.
14 min read
2 articles

Iron deficiency starts long before anaemia, ferritin drops first and lies during inflammation, and iron taken without testing can do real damage.

The USPSTF and large trials found no benefit of multivitamins for healthy adults. Who genuinely needs supplements, and where upper limits actually bite.