What role does B12 play in Abnehmen?

Vitamin B12 is essential for energy metabolism, red blood cell formation, and nervous system function. A deficiency can cause fatigue and lethargy, which may indirectly reduce physical activity and thus calorie expenditure. However, there is no robust evidence that B12 supplementation in individuals without a proven deficiency leads to significant weight loss. Claims that B12 injections or high-dose supplements directly burn fat are not scientifically supported. In practice, B12 is often marketed alongside weight-loss programs, but any effect is likely due to placebo or concurrent lifestyle changes. A blood test can rule out deficiency; if levels are normal, extra B12 provides no measurable benefit for weight reduction. High doses are generally safe but unnecessary. For sustainable weight loss, focus on a calorie-controlled, nutrient-dense diet and regular exercise rather than relying on single vitamins as a quick fix.