Leon Neal / AFP / Getty Images
Jolie, in April, near the end of her three-month procedure to prevent breast cancer.
Justin Sullivan / Getty
Breast cancer patient Heraleen Broome is helped by CT tech Sandra Davis after receiving a CT scan in San Francisco, California.
Fort Worth Star-Telegram / MCT / Landov
Molly Ivins died Wednesday, January 31, 2007, after a long battle with breast cancer. She was 62.
Illustration by Joe Magee for TIME
Decoding Breast Cancer
Peter Dazeley / Getty
A woman feels for breast cancer
Chris Hondros / Getty
A breast cancer patient receives a chemotherapy
Bill Clinton hugs breast cancer survivor Tonia Conine in Oklahoma
Anais Martane for TIME
Liu Lichun, age 40, a breast cancer survivor, photographed at home in Shanghai, China.
American Cancer Society/ Getty Images
Detail of breast cancer cells. Over a lifetime, one in eight women is diagnosed with breast cancer.
Senior Airman David Carbajal / U.S. Air Force
U.S. Air Force Senior Airman Casi Soto lifts weights during the 2011 Barbells for Boobs breast-cancer fundraiser competition at Kandahar Airfield, Afghanistan.
Owen Franken / Corbis
A woman covers her head to keep her warm while receiving chemotherapy for breast cancer.
Lisa DeJong / The Plain Dealer
Susan Hershman, left, connects with Elizabeth Edwards about her battle with breast cancer while Edwards signs copies of her book "Saving Graces" at the City Club of Cleveland, Ohio, on March 26, 2007.