Man, 25, turned bright ‘Bart Simpson’ yellow after going to bed feeling unwell

Man, 25, turned bright ‘Bart Simpson’ yellow after going to bed feeling unwell

As a baby, Kieran Cooper suffered childhood liver disease, turning yellow when he was just two days old.

He had his first operation at just seven weeks old, but it was unsuccessful and he was left needing a liver transplant in 2002 (when he was 11 months old).

However, in January 2026, 25-year-old Kieran found himself turning a ‘luminous’ shade of yellow, joking that he looked like Bart Simpson.