title: Folic acid: a supplementary question.
mesh_terms: D000368:Aged; D003071:Cognition / Q000187:drug effects*; D019587:Dietary Supplements; D005260:Female; D005492:Folic Acid / Q000627:therapeutic use*; D005527:Food, Fortified; D006710:Homocysteine / Q000378:metabolism; D006801:Humans; D008297:Male; D008875:Middle Aged; D016032:Randomized Controlled Trials as Topic
chemical_list: D006710:Homocysteine; D005492:Folic Acid