Myths vs facts: Ferritin Eisenmangel and Abnehmen

Myth: Low ferritin (iron deficiency) directly causes weight loss. Fact: Ferritin reflects iron stores; deficiency leads to fatigue, reduced exercise capacity, and lower metabolic rate – making weight loss harder, not easier. Iron deficiency alone does not burn fat. Myth: Iron supplements promote weight loss even without deficiency. Fact: Only if iron deficiency is confirmed can supplementation improve energy and training performance, indirectly aiding weight management. Without deficiency, iron pills offer no weight-loss benefit and may cause harm (e.g., oxidative stress, GI issues). Myth: Ferritin is the sole marker for iron status. Fact: Ferritin is useful but can be falsely elevated by inflammation. A full iron panel (transferrin saturation, hemoglobin, etc.) is needed for accurate diagnosis. For weight loss, the fundamentals remain calorie deficit, physical activity, and balanced nutrition – not isolated ferritin levels. Evidence: strong human studies on iron deficiency and metabolism, but no evidence that iron directly causes weight loss.