European Cup Winners ' Cup with has announced his retirement from football after an 18-year career . The three -time the 1998 UEFA Cup with Inter winner said the decision was down to injury and a lack of fitness . The two -time Ronaldo for Real also revealed he suffers from hypothyroidism . The medication required to treat the illness is banned under football 's anti-doping rules .
Ronaldo has announced his retirement from football after an 18-year career . The two-time World Cup winner said the decision was down to injury and a lack of fitness . The three-time World Player of the Year also revealed he suffers from hypothyroidism . The medication required to treat the illness is banned under football 's anti-doping rules .