This book provides a comprehensive overview of the sexual consequences of cancer and its treatment, aiming to equip doctors and other healthcare providers with the necessary awareness and knowledge to offer effective care to patients. Although sexuality may not be a primary concern for cancer patients, many ultimately recognize the impact that cancer and its treatment have on their sexuality, whether due to sexual changes or relationship issues. While the effects are often similar, there is significant variation. Some patients experience changes in all phases of sexual response, while others do not; additionally, the consequences may be perceived differently by patients and their partners. Unfortunately, many doctors and healthcare providers are often not sufficiently aware of the effects of cancer on sexuality.