There has been considerable research that shows one or more MTHFR mutations may play a role in cancer, stroke
, heart problems, congenital defects, depression, IBS , miscarriages, migraines, chemical sensitivities, schizophrenia-like syndromes, bipolar disorder, Parkinson’s disease, Alzheimer’s disease and more.
MTHFR Gene testing. One of the least expensive places for this is
23andMe, which will send you back "raw data" which needs interpretation.