Changes in Reproductive and Sexual Health in People With Early Onset Colorectal Cancer

For female patients, hormone biomarker analysis will be performed to measure: anti-Mullerian hormone (AMH), estradiol and FSH in the blood. In male patients, hormone biomarkers of testicular function and spermatogenesis will be monitored: testosterone, inhibin B, steroid hormone binding globulin (SHBG) and FSH. Sperm analysis will also be performed in male patients to monitor changes in sperm count.

All participants will respond to protocol questionnaires, which will include both validated questionnaires as well as non-validated ones. This design will allow for basic demographic, psychosocial and sexual-health-related data to be obtained.