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Iron & ferritin

Ferritin is the usual proxy for iron stores, and low iron is one of the most common — and most reversible — causes of fatigue. The honest nuance is that benefit from repletion generally requires genuine deficiency rather than merely low-normal levels, and that a low ferritin should prompt a search for the CAUSE (loss or malabsorption) rather than just topping it up.

The 4 claims about Iron & ferritin

Each keeps its own verdict — we never average them away.

Educational only, not medical advice. Hub descriptions are curated for honesty; see the methodology.