Her cause of death was revealed Diane Keaton (Diane Keaton). The actress died of pneumonia last Saturday at the age of 79, her family announced in a statement published in People magazine.

“The Keaton family is very grateful for the wonderful messages of love and support received over the past few days for our beloved Diane, who passed away from pneumonia on October 11, 2025.”the family said.

“She loved her animals and was steadfast in her support of the homeless community, so any donation in her memory to a local food bank or animal shelter would be a wonderful way to honor her.”her family added.

A friend of the actress told the outlet that Diane Keaton’s health had deteriorated “very suddenly” and unexpectedly in recent months, calling it “heartbreaking for everyone who loved her.” Although the actress chose to keep her “battle” with health a secret, there were big changes in her life. In March, Keaton tried to sell her “dream home” in Los Angeles for $29 million, despite saying she planned to stay there permanently.

She had been walking her dog in her Brentwood neighborhood every day, according to another source who spoke to the outlet, but had not been seen in the past two months. The Oscar-winning actress’ last Instagram post was in April, where she looked healthy and happy while cuddling her dog, Reggie.

Keaton never married, but had an on-and-off relationship with her “Godfather” co-star Al Pacino for nearly two decades before they split in 1990. She also had relationships with director Woody Allen and actor Warren Beatty. She adopted two children in her 50s. In an interview, the actress had spoken candidly about her fear of not being there for her children as they grow up.

“I am fully aware that my father died when he was 68 and my mother was in her 70s when she began to lose her mental faculties. When I think about my kids in their 20s and 30s, and me in my 70s and 80s, I definitely worry about that. I want to be there for them.

I want my body and mind to stay strong and share all these life lessons. But I also know that they should have the freedom and independence to learn on their own.”the actress had said.

Starting tomorrow, Oct. 17, and for one week, AMC theaters will rerun the legendary films “Annie Hall” and “Something’s Gotta Give” in her honor, according to a Facebook post from the company. It is noted that Keaton won the Oscar for Best Actress in 1978 for her performance in “Annie Hall” directed by Woody Allen, while in the 2003 romantic comedy, “Something’s Gotta Give”, she starred alongside Jack Nicholson, Keanu Reeves and Amanda Peet.