At 13 he was ready to give up his life to save that of his twin brother.
Ashton Kutcher and Michael were born a few minutes away, but in very different conditions.
Ashton came to the world strong and healthy. Michael weighed just four pounds, had a fragile heart and also received a diagnosis of cerebral palsy.
Since childhood, every daily gesture required Michael a huge effort. While Ashton ran and played without difficulty