In an op-ed in the New York Times under the headline "My Medical Choice," the Oscar-winning actress said she underwent surgical procedures to remove both breasts between February and April.
Jolie, 37, said that genetic testing discovered she had the BRCA1 gene, which increased her chances of developing
On Tuesday, the American Cancer Society released a statement urging awareness and caution regarding testing and prophylactic surgery.
"This does not mean every woman needs a blood test to determine their genetic risk for breast and/or
"If appropriate, they should be referred to and have the opportunity to discuss their risk and their options with a genetic specialist."
Jolie said she went public with her procedure to help other women. Jolie's mother, actress Marcheline Bertrand, died from ovarian cancer when she was 56.
"A woman with a mutation of known significance must consider her quantifiable risk in making the very personal decision to have her breasts and ovaries removed or pursuing other options, such as more extensive screening for breast and ovarian cancer," Brawley said.
"The American Cancer Society Board of Directors has stated that 'only very strong clinical and/or pathologic indications warrant doing this type of preventive operation,'" he continued. "Nonetheless, after careful consideration, this might be the right choice for some women."
Pitt addressed his fiance's decision in a statement to the Weekly Standard.
"Having witnessed this decision firsthand, I find Angie's choice, as well as so many others like her, absolutely heroic," he said. "All I want for is for her to have a long and healthy life, with myself and our children. ... This is a happy day for our family."
Jolie praised Pitt in her op-ed and said his support was vital.
"I am fortunate to have a partner, Brad Pitt, who is so loving and supportive," she wrote. "So to anyone who has a wife or girlfriend going through this, know that you are a very important part of the transition."
Jolie has appeared in numerous films, including 2010's "Salt," the "Tomb Raider" films and 1999's "Girl, Interrupted," which earned her an Oscar.