Yaz is a combined oral contraceptive pill containing <strong data-start="1326" data-end="1364">drospirenone and ethinyl estradiol, and mood changes are a reported side effect for some users. Hormonal birth control can influence brain chemistry by affecting serotonin, dopamine, and stress-hormone regulation, which may lead to mood swings, irritability, anxiety, or low mood&mdash;particularly during the first few months of use as the body adjusts. Some women report feeling more emotionally sensitive or experiencing depressive symptoms, while others notice <strong data-start="1789" data-end="1840">improved mood and reduced premenstrual symptoms, especially those with PMDD, for which Yaz is sometimes prescribed. Individual response varies greatly and depends on hormone sensitivity, mental health history, stress levels, and lifestyle factors. If mood changes are mild, they often stabilize within 2&ndash;3 cycles. However, persistent sadness, anxiety, or depressive symptoms should not be ignored, and a healthcare provider may recommend switching formulations or exploring non-hormonal options. Monitoring emotional well-being while using Yaz is important to ensure both physical and mental health balance.