When did Hawking lose his ability to walk? Exploring his battle with ALS
After his diagnosis with a rare, early-onset form of ALS in 1963 at age 21, it was in the late 1960s that Stephen Hawking began using a wheelchair. As the disease progressed, his initial use of crutches gave way to the need for a full-time mobility aid, fundamentally changing his daily life and illustrating the gradual advance of his condition.