Myths vs facts: Folsäure and Darmgesundheit

Folic acid (vitamin B9) is essential for cell division and DNA synthesis, including in the gut lining. Deficiency can impair the intestinal barrier and promote inflammation. Myth: Folic acid supplements directly improve gut health or cure digestive disorders. Fact: In non-deficient individuals, extra supplementation shows no clear benefit for gut health. The gut microbiota itself produces folate, and a fiber-rich diet supports this. Some studies suggest links between folate status and microbiome composition, but evidence is mostly mechanistic or observational; robust RCTs are lacking. Therefore, a balanced diet with folate-rich foods (leafy greens, legumes) is the best strategy. Caution: High-dose folic acid can mask vitamin B12 deficiency. For specific gut issues, consult a physician rather than self-supplementing.