Check out this short video on the impact of the ban on most abortions in Kenya:
[vimeo http://vimeo.com/moogaloop.swf?clip_id=9892391&server=vimeo.com&show_title=1&show_byline=1&show_portrait=0&color=&fullscreen=1 expand=1]
Even when you build "exceptions" into abortion bans, they usually don't do much for people who technically qualify. Lack of legal providers and the natural inclination of red tape to move slowly even as pregnancy progresses quickly makes it difficult for those who qualify to get the abortions they're entitled to. Nothing short of legalization of elective abortion will protect women who have health issues or are raped.
You can read more at the Center for Reproductive Rights.