Myths vs facts: Folsäure and weight loss

Folic acid (vitamin B9) is often linked to weight loss, but the scientific evidence is weak. Some observational studies show that people with low folate levels tend to have higher body weight, but this does not mean that folic acid directly causes weight loss. Folic acid is essential for cell division and energy metabolism, but supplementation does not reliably lead to weight reduction. Most positive effects on weight have been observed in combination with other B vitamins or in specific groups (e.g., pregnant women or those with deficiency). Marketing claims that folic acid is a 'fat burner' are exaggerated. A deficiency can impair metabolism, but if you already have adequate levels, extra intake provides no benefit. The evidence is moderate to unclear. For weight loss, focus on a balanced diet and exercise, not isolated vitamins.