Italy-based nutritionist Giuliano Poser has stated that he helped Lionel Messi to change his diet, leading to the Barcelona star's outstanding 2014-15 campaign with his club.
The Argentine footballer, had a superb 2014-15 season with his club, scoring 58 goals and making 23 assists as Barcelona won the Champions League, Copa del Rey and La Liga Treble, making the Argentine already a huge favourite for the 2015 Ballon d'Or award.
This followed a very disappointing 2013-14, which was disrupted by injury and saw Barca win no trophies for the first time in six seasons.
Messi then started the summer's World Cup impressively, but appeared to get weary and was unable to stop his country from losing 1-0 in the final to Germany.
A number of reports have put this upturn in form down to a new diet, with the Blaugrana club's transfer advisor Charly Rexach revealing that Messi had "eaten too many pizzas" in the past, and the player himself was photographed meeting Poser in Italy during a break from action in April.