First point: I am a male making a comment on DP.
OK. I have dated 2 woman in the past that were on it for over a year. Mind you, this was over the course of about 5 years between dating the two. Both gained weight, had increased acne, hot flashes and major mood swings. One of these women turned very "bitchy" and the other often cried. I don't know what the health risks are and I have to say that it was very effective in preventing children. This is my input from someone who has experienced he prolonged use of this drug as a third party.