Demi Moore: It's difficult to see Bruce WIlis battle with dementia Demi Moore has shared her perspective on Bruce Willis' dementia battle. 2 September 2025 Demi Moore has found it "difficult" to see Bruce Willis struggle with dementia. Bruce Willis was diagnosed with frontotemporal dementia in 2023 The 70-year-old actor was diagnosed with frontotemporal dementia in 2023, and Demi, his ex-wife, admits it's been tough seeing the Hollywood star live with the disease. During an appearance on The Oprah Podcast, Demi shared: "It's difficult.