UCSF researchers looked at young, urban women who obtained the morning after pill in two San Francisco Bay Area cities and did not find evidence easy access to the pill changed their sexual behaviors. STD and pregnancy rates stayed the same.
In these cities and other parts of California, women can obtain the morning after pill on an emergency basis without prescription. As mentioned on ShortNews, the FDA is trying to decide if this should become a nationwide practice.
Study author Tina Raine says: "While many policymakers and even some health care providers are worried that young women will abuse emergency contraception if they have easy access, our study shows they actually don't use it as much as we would hope."