Christina Applegate, a 54-year-old actress, has written a new memoir about her struggles with multiple sclerosis (MS) and her decision to undergo a double mastectomy after breast cancer diagnosis. Applegate was diagnosed at 36 and underwent a routine MRI in 2008, revealing she carried a BRCA1 mutation, a genetic trait that increases cancer risk. She was declared cancer-free and launched an organization to raise awareness about early detection and help high-risk women afford screenings. However, Applegate made a mistake by telling everyone that the surgery was a blessing and instead of helping others who were going through a living hell. She now believes that the truth is the best way to support anyone battling a devastating diagnosis.