"yaz didn&#039;t make me gain weight and it&#039;s helped with my acne. i notice people saying that this caused moodiness. i was diagnosed with depression a few months ago and also inability to concentrate a few months back as well so because of that i take prozac and adderall. those two pills have made me not moody while on yaz. i suggest looking into whether or not you have depression and an inability to concentrate if you experience moodiness while on yaz."