Keto diet in the Holy Land

 Was the Keto diet useful in a battle victory?

https://www.thetimes.co.uk/article/keto-diet-gave-crusaders-the-edge-in-battle-gbw6gdw33?fbclid=IwAR3maT_AKNAuSaGtOeGytZjJ4ArUsNqR1aceMUD8rikvO3h8d6d6dzo-Wjc