a type of eating plan in which someone aims to lose body weight by eating a lot of foods that are high in fat, but few carbohydrates (= foods such as bread and potatoes), with the result that the body is forced to burn fats rather than carbohydrates

He is on the classic ketogenic diet, which uses a ratio of four fats to one carbohydrate and one protein. 他采用的是典型的生酮饮食，即四份脂肪与一份碳水化合物和一份蛋白质的比例的饮食。

She has done studies into ketogenic diets for children with epilepsy. 她对生酮饮食对癫痫儿童的影响进行了研究。