On January 31, 2005, the U.S. government warned that exposure to X-rays and gamma-rays causes cancer—a disease that accounts for the death of one in eight people worldwide. Children are especially vulnerable to radiation-induced cancer.

In CANCER: We Live and Die by Radiation the authors explain how to minimize the risk of developing cancer and give the circumstances under which ionizing radiation should be used to diagnose and treat the more than 200 different cancers. Dr. Delfino and Day's unique book with over 600 references to scholarly works gives timely advice for those facing difficult choices.