Hormones are essential to many bodily processes, including metabolism, growth and development, and reproductive function. Therefore, a hormone imbalance can cause a wide range of symptoms, depending on which hormones are affected. Some common signs and symptoms of a hormone imbalance include: irregular or heavy periods, acne or other skin issues, weight gain or difficulty losing weight, low energy levels, mood changes, insomnia, reduced libido, hair loss or excess hair growth in certain areas, hot flashes, and difficulty getting pregnant. If you suspect that you have a hormone imbalance, it's important to speak with a healthcare professional for proper diagnosis and treatment.