Table 1.

Definition, classification, and acronym of various ketogenic diets

Diet	Acronym	Kcal	Carbohydrates	Lipids
Isocaloric ketogenic diet	ICKD	Calculated according to TEE	< 30–50 g/day	70–80% of DCI
Low-calorie ketogenic diet	LCKD	> 800 kcal/day but < TEE	< 30–50 g/day	> 30–40 g/day
Very low-calorie ketogenic diet	VLCKD	< 800 kcal/day	< 30–50 g/day	< 30–40 g/day

ICKD isocaloric ketogenic diet; TEE total energy expenditure; LCKD low-calorie ketogenic diet; VLCKD very low-calorie ketogenic diet; DCI daily calorie intake