Everything Diane Keaton revealed about her health before her death — including cancer, bulimia

Diane Keaton faced multiple health battles before her tragic death at age 79.

Keaton, whose cause of death has yet to be confirmed, previously opened up about struggling with cancer and an eating disorder.

At age 21, the “Father of the Bride” actress was diagnosed with basal cell carcinoma, a form of skin cancer.

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Diane Keaton attends the Ralph Lauren Spring/Summer 2024 collection during New York Fashion Week on Sept. 8, 2023. Evan Agostini/Invision/AP
“It’s a family history,” she told the Los Angeles Times in 2015. “I remember my Auntie Martha had skin cancer so bad they removed her nose. My father had basal skin cancer and my brother had it. It’s tricky with this skin cancer. That’s why you’ve got to put the sunblock on.”

Keaton also admitted that she didn’t take care of her skin when she was younger.

“Back in my 20s I didn’t pay attention much,” she shared. “I didn’t research and didn’t really care and that was stupid because it’s dogged me my entire adult life, even recently. I didn’t start sun care until my 40s.”

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Diane Keaton at the 1976 Academy Awards. Getty Images

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Diane Keaton attends Paris Fashion Week in July 2023. Getty Images
After battling basal cell carcinoma, Keaton was diagnosed with squamous cell cancer decades later. She underwent two surgeries for her second skin cancer diagnosis, per the LA Times.

The Oscar winner also battled bulimia, revealing on Dr. Oz in 2014 that she developed the eating disorder after being asked to lose 10 pounds for a Broadway role when she was younger.

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Diane Keaton in the 2018 movie “Book Club.” ©Paramount/Courtesy Everett Collection / Everett Collection
“All I did was feed my hunger, so I am an addict,” Keaton shared. “It’s true. I’m an addict in recovery, I’ll always be an addict. I have an addictive nature to me.”

“Typical dinner was a bucket of chicken, several orders of fries with blue cheese and ketchup, a couple TV dinners, a quart of soda, pounds of candy, a whole cake and three banana cream pies,” Keaton explained of her diet at the time she had bulimia.

The mother of two added: “Somebody mentioned that I seemed to have some mental issues, so I went to an analyst. I would go five days a week.”

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Diane Keaton with her son Duke and daughter Dexter at the afterparty for the American Film Institute’s 45th Life Achievement Award Gala in June 2017. Getty Images for Turner

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Diane Keaton in “Mack and Rita.” Courtesy Everett Collection
In a 2017 interview with People, Keaton said that her decision to lose weight which led to her bulimia was caused by “an overabundant need for more.”

“I lost a lot of weight, and continued to keep my weight off for more than a year,” she explained. “I became a master at hiding. Hiding any evidence — how do you make sure no one knows? You live a lifestyle that is very strange. You’re living a lie.”

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Diane Keaton at the Loreal Legends Gala in November 2006. Roger Wong/INFGoff.com
Keaton also admitted that her eating disorder impacted her memories of her time on Broadway.

“People were nice enough, but I felt like an outsider,” she said. “I had a problem — it was sick and creepy. Bulimia takes a lot of time out of your day.”

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Diane Keaton in Brentwood, California on Oct. 12, 2024. Javiles / Bruce / BACKGRID
Keaton died Saturday in California, her family confirmed.

Keaton’s health, according to her friend, “declined very suddenly” in the months leading up to her death.

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Diane Keaton appears at the David Donatello awards ceremony in Rome in March 2018. AP
“It was so unexpected,” the friend told People, “especially for someone with such strength and spirit.”

Keaton’s pal also said her health decline “was heartbreaking for everyone who loved her.”