Childbirth is the number one reason American women visit the hospital, and it ain't cheap. In fact, it's getting more and more expensive. A new study published in Health Affairs found that the cost of having a baby with employer-sponsored health insurance increased by almost 50% in the past seven years.

The study evaluated "trends in cost-sharing for maternity care for women with employer-based health insurance plans, before and after the Affordable Care Act," which was signed into law in 2010. The study looked at over 657,061 women enrolled in large employer-sponsored health insurance plans who delivered babies between 2008 and 2015, as these plans tend to cover more than plans purchased by small businesses or individuals.