"I&#039;m not 100 % sure if it&#039;s the Yaz, but I&#039;ve gone from being a very happy, upbeat, outgoing person to an irritable, slightly crazy person.  Everyone keeps telling me that my symptoms are related to situations that have occurred over the past few months (I lost a friend, both of my grandfathers and my job in the first 9 months of this year) but after reading other people&#039;s reviews, I&#039;m starting to think it&#039;s the pill.  I have been taking Yaz for about a year now and my mood has completely flipped upside down.  My boyfriend has pointed out that I haven&#039;t been myself.  I&#039;m constantly tired.  I always slept easily but haven&#039;t woke up feeling rested for quite some time. "