 Jewish dietary laws prevent mixing meat and milk in one dish . In Asia , the normal diet includes rice and noodles as the main energy source , making their elimination difficult . Therefore , the MCT @-@ oil form of the diet , which allows more carbohydrate , has proved useful . In India , religious beliefs commonly affect the diet : some patients are vegetarians , will not eat root vegetables or avoid beef . The Indian ketogenic diet is started without a fast due to cultural opposition towards fasting in children . The low @-@ fat , high @-@ carbohydrate nature of the normal Indian and Asian diet means that their ketogenic diets typically have a lower ketogenic ratio ( 1 : 1 ) than in America and Europe . However , they appear to be just as effective . 
