The causes of postpartum depression (PPD) are complex, and are not yet fully understood by doctors. However, it's a real medical condition, and women should remember that PPD is never their fault, and it's highly treatable with the right intervention.
Some research suggests that PPD is caused by a combination of both genetic and environmental factors, including past trauma, life stress, hormones, and the physical and mental demands of caring for a newborn baby.
Women may be at a greater risk for PPD if they've been diagnosed with a mental health condition like anxiety, depression, or bipolar disorder in the past, or if they have a family history of these conditions. In addition, if you've experienced postpartum depression during previous pregnancies, there's a greater chance of developing it again.
In some cases, though, it's unclear why a woman develops PPD, which can make it even more confusing and difficult. However, it's important to remember that recovery is possible.