One study of 39 high - performance athletes found that drinking 260 mg of ketone esters per pound of body weight (573 mg / kg) during exercise improved athletic performance.
One study of 15 people found that those who consumed 0.86 calories of ketone esters per pound (1.9 calories / kg) of body weight had significantly less hunger and desire to eat, compared to those who consumed a carbohydrate drink.