The 8 members of what's known as the vitamin B complex are critical nutrients for all things mind-related: mood, memory, even migraines can benefit from the B's. In the right amounts, the B's can quell anxiety, lift depression, ease PMS, and boost your energy. The B vitamins are a chemically related family of nutrients that work as a team. Their mood-boosting and other health benefits result from intricate behind-the-scenes work in the body.

Some B vitamins help cells burn fats and glucose for energy. Others help make neurotransmitters like serotonin. And some B's assist with the production and repair of DNA.