How are Folsäure and weight loss related?

The direct relationship between folic acid and weight loss is not well established by scientific evidence. Folic acid (vitamin B9) is essential for cell division, DNA synthesis, and homocysteine metabolism. Some observational studies suggest a possible link between low folate levels and higher body fat, but the evidence is weak and mostly associative. Randomized controlled trials do not show a significant effect of folic acid supplementation on weight loss. Most positive reports come from animal studies or small, non-representative samples. Additionally, high folic acid intake (especially from synthetic sources) may pose risks in individuals with vitamin B12 deficiency. In summary: folic acid is not a weight loss aid; a balanced diet with natural folate sources (e.g., green leafy vegetables) is recommended, but not as a sole weight reduction strategy. Evidence is weak to moderate, mainly from observational studies.