Final answer:
Muhammad Ali was diagnosed with Parkinson's disease at 42 after retiring from boxing and became an advocate for Parkinson's awareness and research. Alongside Michael J. Fox, he worked towards funding research and even appeared before Congress to present their case. Ali continued his activism despite the progression of his illness until his death in 2016.
Step-by-step explanation:
Parkinson's Disease and Muhammad Ali
Muhammad Ali, the world champion boxer, was diagnosed with Parkinson's disease at the age of 42, shortly after he retired from his illustrious boxing career. The condition is often associated with head trauma, and in the case of Ali, his years of boxing may have contributed to his diagnosis. Parkinson's medications and the search for better treatments became a significant part of his life post-retirement. Ali teamed up with fellow Parkinson's patient, actor Michael J. Fox, to promote awareness and fund research for the disease. In 1996, despite the progression of Parkinson's disease, Ali demonstrated a great moment of strength by lighting the flame at the Summer Olympics in Atlanta.
Ali's determination to fight against Parkinson's disease was manifest in his activism, including his appearance before Congress with Fox. In 2005, his efforts were recognized when he was awarded the Presidential Medal of Freedom. Parkinson's disease gradually took a toll on his health, leading to his passing in 2016 due to a respiratory infection exacerbated by the disease. His legacy, however, continues to inspire many in the efforts to combat neurological conditions such as Parkinson's and ALS.