So why take them? - It's a no-brainer.
MIND, the mental health charity, recommends a walk in the country as being helpful in lifting depression.
Are you on a diet? - Dieting is an often overlooked, but significant cause of depression. Good nutrition is an excellent way to improve your health. Obviously when you are not eating enough for the needs of your body and your brain you will experience both physical and mental harm. - It is not necessary (or desirable, or effective or even safe) to diet to lose weight. The safe, natural way to lose excess weight is to cut down on salt and salty food. Avoid ready meals and takeaways because these are usually highly salted and offer poor nutrition. They are likely to worsen your feelings of depression.
And see Sodium in foods