Health conditions it can treat: increase energy levels, brain function, cell metabolism; prevent infections; support muscle and nerve function; proper red blood cell and DNA formation
Natural sources: whole grains, salmon, dark leafy veggies (broccoli, spinach, collard greens, turnip greens), legumes (lentils, chickpeas, black beans), nuts and seeds, animal products (milk, eggs, beef, chicken, turkey, organ meats like liver), nutritional and Brewer’s yeast
$ or $$$: A vitamin B complex is relatively inexpensive. You can invest a bit more money to get a supplement with certain key B vitamins – like B6, B12, folate – in their active (and most absorbable) form.