Having children is a huge physiological step for most parents. Not only does a woman's body change to accommodate the baby, parents need to prepare for the mental challenges of kids. And they can be daunting: with every child you are adding a new personality to the family. An unknown personality that needs constant attention and love (as will any other children you currently have).
But there really isn't much written about parents' prenatal mental health. If you consider Planned Parenthood's numbers that up to half of all pregnancies in the United States are not planned, well, is it any wonder that the soon-to-be-parents are not mentally prepared for the upcoming challenges? This is an area where we need more research and more resources. If moms- and dads-to-be are not mentally healthy at the time of their child's birth, then how can we expect the new family to get off to the best start possible?