How are B12 and Abnehmen related?

The relationship between vitamin B12 and weight loss is often discussed in popular contexts, but the scientific evidence is weak. B12 is essential for energy metabolism, DNA synthesis, and nervous system function. A deficiency can cause fatigue and low energy, which might indirectly reduce physical activity and calorie expenditure. However, there are no robust studies showing that B12 supplementation directly leads to weight loss in individuals with normal levels. Most claims come from marketing or anecdotal reports. The evidence is best described as 'unclear' or at most 'mechanistic.' If you suspect a B12 deficiency, consult a doctor, but for weight loss, a calorie deficit and regular exercise remain the key factors.