LOS ANGELES: Jane Fonda announced on social media on Friday (Saturday in Manila) that she has cancer.

"So, my dear friends, I have something personal I want to share. I've been diagnosed with non-Hodgkin's Lymphoma and have started chemo treatments," the 84-year-old United States actor wrote in an Instagram post.

"This is a very treatable cancer," she added, "so I feel very lucky."

Non-Hodgkin lymphoma is a cancer that begins in the white blood cells and affects parts of the body's immune system.

Fonda acknowledged that unlike many, she is privileged to have insurance, as well as access to the best doctors and care.

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"Almost every family in America has had to deal with cancer at one time or another and far too many don't have access to the quality health care I am receiving and this is not right," she said.

Fonda said she has begun a six-month course of chemotherapy, is handling the treatments well, and will not let it interfere with her climate activism.

Fonda has dealt with cancer before. She had a tumor removed from her breast in 2010, and has also had skin cancer.

Part of a legendary Hollywood family — her late father Henry Fonda and late brother Peter Fonda were actors, as is Jane's son Troy Garity while Peter's daughter Bridget Fonda acted in the 1990s and early 2000s — Jane Fonda gained fame for both her acting and her activism starting in the late 1960s.

She won Oscars for her performances in 1971's "Klute" and 1978's "Coming Home." She also received nominations for her roles in 1969's "They Shoot Horses, Don't They?," 1977's "Julia," 1979's "The China Syndrome," 1981's "On Golden Pond" and 1986's "The Morning After."

She has also starred in the films "Barbarella" and "9 to 5," and in the Netflix series "Grace and Frankie."