What does nutrition have to do with mental health? You might be surprised to find out the truth behind what happens when a person has a nutritional deficiency.
Nutritional deficiencies can cause all sorts of psychiatric symptoms including apathy, low energy, irritability, insomnia, low energy, agitation, fatigue, concentration problems, aches and pains, weight changes, including weight loss or weight gain. Sound a lot like the symptoms of depression? The truth is the average American diet of fast food is low in vital nutrition that you need for your body to function correctly.
This is to say that all depression is caused by bad nutrition but it certainly a contributing factor in many cases and poor nutrition will always make depression worse. Antidepressant drugs also do not correct nutritional problems. So if your depressed because of nutritional problems an antidepressant will only partially cover up the problem and you body still wo not function correctly.