Which lifestyle factors change Glukose?

The MTHFR C677T variant slightly reduces enzyme activity, but clinical impact is generally small. Check homocysteine first; if normal, there is no evidence you need to avoid folic acid or switch to methylfolate. Birth control may affect folate metabolism, but no specific interaction with MTHFR is proven. Evidence is human-moderate (observational). Caveat: do not change supplements without lab testing and medical advice.