Bruce Willis is “doing OK” amid his battle with dementia. The 69-year-old actor was diagnosed with frontotemporal dementia in 2023, but Rumer Willis, his eldest daughter, has revealed that Bruce is in good spirits. The 35-year-old actress told Fox News Digital: “He’s great. Yeah, yeah, doing OK. Thank you so much for asking.” Rumer also explained why her family wanted to be so transparent about his health issues. She explained: “I think, for me, through this experience, what’s been so incredible is my dad is so beloved, and that’s been so evident in the transparency with which we’ve been shari…