Hormonal imbalances occur when the levels of hormones in the body are too high or too low. Hormones are chemical messengers that regulate various functions, such as mood, metabolism, and growth. When these levels are disrupted, it can lead to symptoms like fatigue, weight gain, or mood swings. Common causes include stress, poor diet, and certain medical conditions. For example, conditions like polycystic ovary syndrome (PCOS) can cause an imbalance in estrogen and testosterone levels, leading to irregular periods and other health issues. Addressing hormonal imbalances often involves lifestyle changes, medication, or therapy to restore balance and improve overall well-being.