The correct answer is major depressive disorder as depression causes changes in appetite, loss of energy, feeling of sadness, despair and loss of interest.
Depression is a mood disorder characterized by persistent sadness and loss of interest. It affects how you feel, think, and behave and can lead to a variety of emotional and physical problems. It is also known as major depressive disorder or clinical depression. You may have difficulty performing routine daily activities, and you may feel as if life isn't worth living.
A combination of biological, psychological, and social sources of distress are possible causes. According to new research, these factors may cause changes in brain function, such as altered activity of certain neural circuits in the brain. Major depression is characterized by a persistent feeling of sadness or loss of interest, which can result in a variety of behavioral and physical symptoms.
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