You cannot cure depression with your diet although you can alleviate the symptoms depending upon what you are eating. www.webmd.com/depression/guide/diet-recovery They will have some helpful answers to your questions.
According to Christian teaching, all suffering and pain is either a test, a punishment or an unnecessary and unjustified random occurrence.
Suffering and dying exist. Existentialism has no part in atheism.
One of the main suffering is 'Slavery'. It exists in poor countries like Africa and India. How can say it does not exist?
Yes that is depression. Volunteer, Spend less time with negative people. And seek help
Euthanasia exists because there is people that have incurable diseases and cannot live their life suffering that way so they choose to die by the hand of doctors
less unemployment
Humans are a sociable animal. We are not meant to exist in total isolation without suffering mental instability.
There are various diets that exist depending on your blood type. Many nutritionists believe that people of specific blood types function better being on certain kinds of diets. Some blood types require high protein diets and others are better off with mostly vegetarian diets. You should first determine your blood type and then consult a doctor or nutritionist to determine what type of diet would work best for you.
Eating it and hanging yourself?
Yes, many people may be "part" vegetarian in that they still ea fish or eggs or other meat products, but omit some from their diets. See the Flexitarian link, below.
Phronemophobia is the fear of thinking. There is not much information about this phobia even though certain medical facilities offer counseling to people who believe they may be suffering from it.
We believe both suffering and death occur, so that means they exist.