Depression is a state of mind or emotion marked by deep sadness or a sense of hopelessness.
There is also evidence that women have more recurrent episodes of depression and that the average episode lasts longer for women. Depression can manifest in various ways, but primarily involves feelings of profound sadness or complete loss of interest or pleasure in everyday activities. Other symptoms of depression include loss of appetite, insomnia or over-sleeping, restlessness, persistent fatigue, feelings of inadequacy or inappropriate guilt, difficulty remembering things or concentrating, and thoughts about death or suicide. Depression in women is sometimes triggered by biological factors, life stresses, or difficulty coping with events or changes. There is evidence that brain neurotransmitters like serotonin and norepinephrine are involved in depression.