birth control
"Initially I was on Yasmin for 1 Year.  Noticeable changes/side effects were:
Weight-loss, Hair-thining, More emotional, Lighter periods

I went off it for a month (I forgot to renew my prescription) and in that month I put on about 2kg, was not so emotional and my period was a little heavier.  Also, the first two weeks of being off Yasmin, my body was super-sensitive!  Possibly both a good and bad thing?  

I am now back on Yasmin and the old side-effects are kicking in again.  Overall, I would say it works well with my body so will continue to use it.  Recommend it if it works with your body too, the only way to tell is to try it really."