Depression is one of the most common mental disorders affecting approximately 340 million people in the world. No one is immune from depression - it occurs in people of all social classes, all countries and all cultural settings.
Depression occurs due to alterations in the levels of neurotransmitters in the brain.
Adolescent depression is an ailment that occurs during the teenage characterized by persistent melancholy, disappointment and loss of self-esteem.
Being overweight or obese during childhood is a stronger predictor of depression later in life. Maintaining normal weight from early life can prevent depression.