Can Ferritin help with sleep?

Ferritin is a protein that stores iron and serves as a key biomarker for the body's iron supply. Low ferritin levels (e.g., <50 ng/mL) are linked to Restless Legs Syndrome (RLS), which can significantly disrupt sleep. In such cases, iron supplementation (under medical guidance) may alleviate RLS symptoms and thereby improve sleep quality. However, evidence for a direct sleep-enhancing effect of ferritin in people without iron deficiency or RLS is weak. Excessively high ferritin (e.g., in hemochromatosis) can also cause health issues. Therefore, individual assessment by a physician is advisable before taking any action. The predictive value of genetic tests for ferritin-related genes (e.g., HFE) is limited and often overstated in marketing.