Jay Leno is concerned with his wife Mavis' dementia diagnosis.

Jay Leno was diagnosed with dementia, so he filed to take over his wife's estate. Leno petitioned in a Los Angeles court to make sure his wife Mavis Leno's estate plan is executed correctly because she lacks the necessary capacity. According to the filing, Mavis has been losing capacity and orientation for several years. Mavis is suffering from dementia, major neurocognitive disorder, and has lost her cognitive function, according to her doctor's declaration. The revelation of Mavis' diagnosis comes more than a year after Leno suffered burns to his hands, face and chest when flames erupted as he worked on a vintage car. The television personality was injured in a motorcycle accident in January of 2023. The comedian wants to set up a trust for Mavis, her brother and Leno in order to provide for them. The petition states that the former "Tonight Show" anchor has handled the couple's finances throughout their 43-year marriage, and will continue to do so until his passing. Leno and Mavis met at the Comedy Store and got married. "You can leave your underwear on the door knob for the rest of your life if you screw it up," Leno told the outlet. "If you want to be the person you want to be, marry someone who's the person you wish you could be.