Revealed: The true cause of Kylian Mbappe's stomach problem which led Real Madrid superstar to lose 6kg and miss Club World Cup group stage

Mbappe had to go to hospital with what Real Madrid described as "an acute case of gastroenteritis" at the start of the tournament, and he was feeling so ill that he could not leave his hotel room. It has now been revealed by L'Equipe that the stomach problem was caused by Mbappe suffering food poisoning shortly before leaving for the USA.

Mbappe began to feel ill before travelling and suffered from dehydration. But the condition worsened while he was in the States as he began to feel nauseous, had a fever and stomach pain. He was put on a drip in hospital and medical tests revealed that he had suffered from food poisoning as a result of bacteria present in chicken that Mbappe had eaten.

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Mbappe lost a total of six kilograms due to the condition and did not make the squad for any of Madrid's group matches. He came off the bench in the 1-0 win over Juventus in the last 16 and against Borussia Dortmund in the quarter-finals, scoring a last-gasp bicycle kick in the 3-2 win over the Germans.

Mbappe will come up against Paris Saint-Germain on Wednesday for the first time since leaving the club in 2024 as Madrid take on the Champions League holders in the Club World Cup semi-finals at the MetLife Stadium in New Jersey.