title: [The vitamins B₆, B₁₂ and folic acid - successful strategy for increasing vitality?].
mesh_terms: D060825:Cognitive Dysfunction / Q000188:drug therapy*; D003863:Depression / Q000188:drug therapy* / Q000517:prevention & control; D005492:Folic Acid / Q000627:therapeutic use; D006801:Humans; D014805:Vitamin B 12 / Q000627:therapeutic use; D025101:Vitamin B 6 / Q000627:therapeutic use; D014803:Vitamin B Complex / Q000627:therapeutic use*
chemical_list: D014803:Vitamin B Complex; D025101:Vitamin B 6; D005492:Folic Acid; D014805:Vitamin B 12