Jay Leno is a man of his word. The comedian, 74, is the official caretaker for his wife of 45 years, Mavis, after she was diagnosed with dementia and he was granted conservatorship over her last year.

Jay Leno has opened up about how much he enjoys caring for his wife as she lives with dementia. In a conversation with “In Depth with Graham Bensinger,” the former late-night host shared what ...