4. Vitamin D
According to WebMD, a 2010 national study revealed that the likeliness of suffering from depression was greatly increased in individuals with a Vitamin D deficiency. A non-related study showed that an increased level of Vitamin D (to a certain extent) led to a decreased level of depression symptoms. If you’re looking to boost your Vitamin D intake consider adding more raw fish, fortified cereals, eggs, mushrooms and diary products to your diet.