Causes

There's no single cause of postpartum depression, but physical and emotional issues may play a role.

• Physical changes. After childbirth, a dramatic drop in hormones (estrogen and progesterone) in your body may contribute to postpartum depression. Other hormones produced by your thyroid gland also may drop sharply — which can leave you feeling tired, sluggish and depressed.
• Emotional issues. When you're sleep deprived and overwhelmed, you may have trouble handling even minor problems. You may be anxious about your ability to care for a newborn. You may feel less attractive, struggle with your sense of identity or feel that you've lost control over your life. Any of these issues can contribute to postpartum depression.