Evidence check: Ferritin Eisenmangel in the context of Blutzucker

The question about the link between ferritin (iron deficiency) and blood sugar is complex. Low ferritin indicates iron deficiency, which can impair insulin sensitivity and worsen glucose tolerance. However, ferritin is also an acute-phase protein that rises with inflammation – and inflammation is common in insulin resistance and type 2 diabetes. Therefore, a normal or elevated ferritin level can coexist with true iron deficiency, complicating interpretation. The evidence is mostly observational: studies show associations between low ferritin and higher fasting glucose, but no strong causal evidence. MyBody-X tests can measure ferritin but cannot distinguish between iron deficiency and inflammation-driven changes. Clinical workup with a full iron panel (including transferrin saturation, soluble transferrin receptor) and inflammatory markers (CRP) is necessary. Caution: Iron supplementation without proper diagnosis can be harmful in inflammatory states or hemochromatosis. Consult a physician before taking action.