Answer B. Ornish Diet
The four main types of ketogenic diets include:
1. classic ketogenic diet
2. medium chain triglyceride diet
3. modified Atkins diet
4. low glycemic index diet
The classic ketogenic diet is a high fat diet, with about 90% of daily calories from fat. In the medium chain triglyceride (MCT) diet, 60% of daily energy comes from medium chain triglycerides. The modified Atkins diet (MAD) is a high-fat, low-carbohydrate diet similar to the classic ketogenic diet, but without a set ketogenic ratio. The low glycemic index treatment (LGIT) diet provides more liberal total daily carbohydrate intake and favors foods with low glycemic indices. The Ornish diet is an extremely low-fat diet, with about 10% of calories per day from fat.
Source: Kossoff EH, Zupec-Kania BA, Auvin S, et al, for the Practice Committee of the Child Neurology Society. Optimal clinical management of children receiving dietary therapies for epilepsy: Updated recommendations of the International Ketogenic Diet Study Group. Epilepsia Open. 2018;3:175-192.