Describe the factors that may contribute to the occurrence of postpartum depression.

Postpartum depression can be caused by a combination of physical, emotional, and lifestyle factors. Some potential contributors to the occurrence of postpartum depression include hormonal changes, lack of sleep, physical discomfort after childbirth, a history of depression or anxiety, a difficult or traumatic childbirth experience, lack of support from family or friends, relationship problems, financial stress, and feelings of isolation or loneliness. Additionally, the stress and demands of caring for a newborn baby can also contribute to the development of postpartum depression. It's important for new mothers to seek support and professional help if they are experiencing symptoms of postpartum depression.