Is Folsäure useful for gut health?

Folic acid (vitamin B9) is crucial for cell division and DNA synthesis, including in the gut lining. Some studies suggest adequate folate status may support intestinal barrier integrity and positively influence gut microbiota composition, e.g., by promoting short-chain fatty acid production. However, the evidence is moderate: most data come from observational studies or small interventions, not large RCTs. Moreover, research often focuses on natural dietary folate rather than synthetic folic acid from supplements. High-dose folic acid can mask vitamin B12 deficiency, a particular risk in older adults. For gut health, a balanced diet rich in folate (leafy greens, legumes) is likely more beneficial than isolated high-dose folic acid. There are currently no direct clinical recommendations for folic acid supplementation specifically for gut health. Caveat: MyBody-X tests do not provide specific data on folic acid and gut health.