Kylian Mbappé, the Real Madrid striker, experienced a notable weight loss of approximately 6 kilograms due to food poisoning during the Club World Cup held in the United States. The illness was caused by a bacterial contamination likely linked to chicken he consumed before traveling to the tournament. Earlier reports had indicated a weight loss of 4 to 5 kilograms attributed to a viral gastroenteritis, but the latest and more detailed information confirms the 6-kilogram loss related to the food poisoning incident. Mbappé was visibly weakened upon his return to training but has since been recovering physically, aided by the arrival of a new coach and a less intensive schedule in May. The medical staff and multiple sports news outlets, including L'Equipe and Marca, have confirmed these developments.