There is no specific age range at which high prolactin levels occur, as it can affect individuals at any age. High prolactin levels, known as hyperprolactinemia, can occur in both males and females. In females, it can be associated with conditions such as polycystic ovary syndrome (PCOS), pituitary tumors, thyroid dysfunction, certain medications, and other hormonal imbalances. In males, it can be caused by pituitary tumors, medications, kidney disease, and other factors. The evaluation of prolactin levels and the identification of underlying causes should be based on individual symptoms, medical history, and diagnostic testing rather than age alone. If you suspect high prolactin levels or have related symptoms, consult with a healthcare professional for appropriate evaluation and management.