It is no secret that a large number of ailments can be prevented and even treated with proper diet and nutrition. While it is true that certain vitamins can play a role in some cases, it is important to highlight that the lack of a vitamin in particular is not the definite cause of depression, as some myths might suggest. Depression is a psychological occurrence linked with brain functioning and because of the complexity of the disease, depression symptoms and treatment options can vary greatly from patient to patient. Physical symptoms of depression are often ignored or underestimated. These symptoms can include sleep problems, chest pains, fatigue, muscle and joint pain, and headaches, among others.