acne
"I was on Yaz for 4 years for acne and pretty much had no problems. I did not experience any weight gain at all.  It may have made me moody on the angry side at times but I didn't find myself crying over nothing (I might have a short temper anyway). My acne did clear up but never completely, I have always still had a few pimples whilst on Yaz but I was happy with the level it was so I am not sure if it was Yaz or whether I only broke out due to stress in my final year of high school. Other than that it lightened my period and eliminated any cramps that sometimes were so bad I would vomit. I only stopped taking it because I was sick of taking it everyday and it may have decreased my libido. But everyone's different."