Customers getting pointless preventative care such as mammograms before age 50 increases costs in two ways. First, the mammograms cost money. Second, the mammograms make the patients less healthy (via stress, unnecessary biopsies, infections caused by the biopsies, etc) which costs even more money.

Luckily Congress is looking out for women and passed a law requiring medically useless tests.

http://www.bloomberg.com/news/2012-07-31/in-mammogram-debate...

http://www.uspreventiveservicestaskforce.org/uspstf/uspsbrca...