It's common for moms to feel a little "off" after giving birth—the hormonal changes can cause something called the "baby blues," where mom is a little sadder than usual. But another possibility is postpartum depression, which interrupts the mom's mood for an extended period of time, making it hard to get out of bed or care for herself and her newborn. How can she start to feel better without self-medicating? Host William C. Moyers invited Chief Medical Officer Alta DeRoo, MD, to weigh in.