Sharon Stone is back. And after famously serving as amfAR’s Global Campaign Chair for 15 years, she’s taken on a new role as advocate for brain-aging diseases that disproportionally affect women. Only one third of Alzheimers patients are men, for instance. And don’t even get Stone started on strokes. “This is why I do it: My mother had a stroke. My grandmother had a stroke. I had a massive stroke — and a nine-day brain bleed,” she told Variety at an event she hosted to raise awareness for the Women’s Brain Health Initiative in West Hollywood on Wednesday night.

They say that Hollywood loves a comeback but unfortunately, that has not been Stone’s experience. “People treated me in a way that was brutally unkind,” she said. And she wasn’t referring to men (other than perhaps her ex-husband Phil Bronstein). “From other women in my own business to the female judge who handled my custody case, I don’t think anyone grasps how dangerous a stroke is for women and what it takes to recover — it took me about seven years.”

During that time, Stone suffered insurmountable losses, both professional and personal: “[From] trying to keep custody of my son to just functioning — to be able to work at all,” Stone added. “I was so grateful to [LVMH head and now the second-richest person in the world] Bernard Arnault, who rescued me by giving me a Dior contract. But I had to remortgage my house. I lost everything I had. I lost my place in the business. I was like the hottest movie star, you know?” she said, her voice trailing off. “It was like Miss Princess Diana and I were so famous — and she died and I had a stroke. And we were forgotten.”

But what Stone wants people to remember is her potentially life-saving advice: “if you have a really bad headache, you need to go to the hospital,” she said. “I didn’t get to the hospital until day three or four of my stroke. Most people die. I had a 1% chance of living by the time I got surgery — and they wouldn’t know for a month if I would live.” At the time, Stone wasn’t even aware of how dire her chances for survival were. “No one told me — I read it in a magazine,” she added.

The sister of “Dr. Quinn, Medicine Woman” was another one of the lucky survivors of a brain aneurysm. “She had a massive headache and collapsed,” Jane Seymour told Variety. “She was not expected to live, and they had to close down [the set of] ‘Dr. Quinn.’ I was by her bedside the whole time. But she managed to relearn how to walk, talk and she’s good now. We call her the miracle.”

Even though Stone didn’t initially feel any love from the sisterhood, she was certainly surrounded by admirers on this night. Andie MacDowell, Kelly Lynch, Garcelle Beauvais and Rumer Willis were among the actresses who turned out to show their support at celebrity florist Eric Buterbaugh’s galley. And as far as they’re concerned, Stone is still a hot movie star. “I’ve known Sharon a long time and she is truly powerful woman,” Broadway and film producer Paula Wagner told Variety. “Whatever she undertakes, she does it with great strength and intelligence and brings awareness to it. So it’s wonderful that she is bringing this story openly and honestly. She inspires me.”