After tennis star Novak Djokovic’s nutritionist discovered he was allergic to gluten, he switched to a gluten-free diet. Since then he’s made the final of the U.S. Open, won the Davis Cup and Australian Open, and is currently on a 39-match winning streak.
Those with an allergy to gluten can have trouble digesting the protein, which can in turn lead to various medical issues.
According to Yahoo Sports:
“Djokovic spoke about the change earlier this year. ‘I have lost some weight but it’s only helped me because my movement is much sharper now and I feel great physically,’ he said in April.”