
The ketogenic diet is a trending, high-fat, low-carb diet that has been shown to deliver several health benefits. It has been used since the 1920s to treat children with epilepsy and seizures. In recent years, its use has been proposed for other disorders such as cancer, autism, and psychiatric disorders. While the keto diet is relatively safe for adults, it may not be the case for children and teens unless prescribed by a health professional for medical reasons. This is because the keto diet seriously limits carbohydrates, and children need carbs to be mentally and physically active. There is also a lack of understanding of the long-term impact of the keto diet on growth and nutritional status.
| Characteristics | Values |
|---|---|
| Safety | Many doctors and dietitians believe more studies are needed to determine whether the keto diet is a safe weight-loss method over a long period of time. The keto diet is not recommended for weight loss in children because it seriously limits carbohydrates, and children need carbs to be mentally and physically active. However, it is deemed safe for children with epilepsy and brain cancer, under close medical supervision. |
| Effectiveness | The keto diet has been used since the 1920s to help children with epilepsy control seizures. It has also been used to treat other disorders such as inherited metabolic disorders, Prader-Willi syndrome, and some specific types of cancers. |
| Side effects | Adverse effects have been reported in all types of keto diets, with gastrointestinal, cardiovascular, renal/genitourinary, and skeletal issues being the most common. The frequency and severity of adverse effects increase with the restrictiveness of the diet. |
| Long-term impact | The long-term impact of the keto diet on growth and nutritional status is not yet fully understood, especially when started during childhood. |
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What You'll Learn

Ketogenic diets for weight loss in children
The ketogenic diet is a very-low-carb, high-fat diet that has been used since the 1920s to help children with epilepsy manage their seizures. The diet is designed to put the body into a state of ketosis, where fat is burned for fuel instead of carbohydrates. While this diet has been shown to be effective for some children with epilepsy, it is not recommended for weight loss in children.
The keto diet is not suitable for weight loss in children because it severely restricts carbohydrates, and children need carbohydrates to be mentally and physically active. A healthy, well-balanced diet for children should include about 130 grams of carbohydrates per day (approximately 45-65% of their calories). In contrast, the keto diet limits carbohydrates to around 20%. This can lead to constipation and lethargy in children, as high-fat, low-fibre diets can make it hard for them to get enough fibre and energy.
Furthermore, the keto diet removes three of the five food groups that provide essential vitamins and minerals for growth. For example, cutting out dairy can result in a lack of vitamin D and calcium, which are necessary for bone development. As a result, dietitians and doctors recommend that children establish healthy eating habits instead of following fad diets like keto. Quick-fix weight-loss schemes are not sustainable for children, and it is more important to teach them healthy lifestyle choices that they can carry into adulthood.
However, some healthcare professionals may recommend the keto diet for weight loss in children with specific medical conditions. For instance, the keto diet has been proposed as a possible treatment for children with inherited metabolic disorders, Prader-Willi syndrome, and certain types of cancer. In these cases, it is crucial that the child is closely monitored by a healthcare professional to ensure their safety and minimize any adverse effects.
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Ketogenic diets for epilepsy in children
The ketogenic diet is a special high-fat, low-carbohydrate diet that has been used to treat children with epilepsy since the 1920s. The diet is typically recommended when traditional antiepileptic drugs (AEDs) have failed or cause unacceptable side effects. It is believed that the diet helps control seizures in some people with epilepsy.
The diet is very restrictive and requires careful measurements of calories, fluids, and proteins. Foods are weighed and measured, and no other sources of carbohydrates can be eaten. The diet is usually started in the hospital, with the patient admitted for around four to five days while their body starts making ketones. During this time, the patient and their caregivers learn how to plan their meals, which can be very challenging. The diet is not nutritionally balanced, so vitamin and mineral supplements are usually required.
The ketogenic diet has been shown to be effective in reducing seizures in children with epilepsy. Several studies have found that the diet can decrease seizure frequency by up to 50%. In one study, 28 children in the diet group experienced a greater than 50% seizure reduction, and five children had a greater than 90% seizure reduction. However, the diet does not work for every child, and there is a risk of seizure relapse if the daily carbohydrate limit is exceeded.
While the ketogenic diet has been used successfully to treat epilepsy in children, it is not recommended for weight loss in this age group. Children need carbohydrates to be mentally and physically active, and the diet seriously limits their intake. There is also a lack of research into the long-term impact of the diet on growth and nutritional status, so it should only be undertaken under medical supervision.
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Ketogenic diets for brain cancer in children
The ketogenic diet is a very-low-carb, high-fat diet that has been shown to deliver several health benefits. The diet was originally developed in the 1920s to treat epilepsy, specifically seizures, and is still used for this purpose today under medical supervision.
In recent years, there has been growing interest in the use of the keto diet to help manage certain health conditions in children, including epilepsy and brain cancer. The ketogenic diet is known to be a possible adjuvant treatment for several medical conditions, and its use has been increasing among adolescents and young adults due to its supposed weight-loss effects. However, it is important to note that the keto diet is not recommended for weight loss in children because it seriously limits carbohydrates, which are essential for children to be mentally and physically active.
Ketogenic dietary therapy (KDT) triggers a cascade of biochemical pathway changes, leading to increased interest in its potential to deliver neuroprotective and therapeutic benefits to a range of neurological conditions, including brain tumours. Research in this area has focused on adult brain tumours, but there is a potential opportunity to expand research to include childhood brain tumours, such as Diffuse Intrinsic Pontine Glioma (DIPG).
While the keto diet is relatively safe for adults, it may not be the case for children and teens unless it is prescribed by a health professional for specific medical reasons. The keto diet can have certain adverse effects, and the risk of side effects increases in children as their growing bodies are more susceptible. Medical guidance is mandatory when the keto diet is used to help treat epilepsy or cancer in children. It is important to note that there is currently no scientific evidence to show that the ketogenic diet is effective in treating brain tumours, and most cancer specialists and scientists do not believe it can help destroy tumour cells or slow their growth.
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Nutritional deficiencies in children on ketogenic diets
The ketogenic diet is a very-low-carb, high-fat diet that has been used to treat refractory epilepsy and brain cancer in children. While the keto diet is relatively safe for adults, it may not be safe for children and teens unless prescribed by a health professional for specific medical reasons.
The keto diet is not recommended for weight loss in children because it seriously limits carbohydrates, and children need carbs to be mentally and physically active. Children on a healthy, well-balanced diet should eat about 130 grams of carbohydrates a day (approximately 45-65% of their calories), whereas the keto diet restricts carbohydrates to about 20%. Due to its restrictiveness, the diet is not appropriate for most healthy children and teens.
The keto diet can lead to nutritional deficiencies, especially in growing children who are more susceptible to the risks of restrictive diets. The diet's unbalanced ratio of lipids, carbohydrates, and proteins can lead to a lack of essential micronutrients, including selenium, magnesium, phosphorus, and vitamins B and C. Micronutrient deficiencies have been linked to an increased risk of overweight/obesity and other dangerous health conditions, including resistance to infection, birth defects, cancer, cardiovascular disease, and osteoporosis.
Therefore, it is essential that children following the keto diet under medical supervision receive a clinical evaluation of possible side effects and a strict evaluation of their growth and nutritional status. The prophylactic use of micronutrient supplementation should also be considered before starting any child on a ketogenic diet.
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Long-term health outcomes of ketogenic diets for children
The ketogenic diet is a very-low-carb, high-fat diet that has been used since the 1920s to treat children with epilepsy and seizures. While the diet is relatively safe for adults, it may not be the case for children and teens unless it is prescribed by a health professional for specific medical reasons.
The keto diet is not recommended for weight loss in children because it severely limits carbohydrates, and children need carbs to be mentally and physically active. Children on a healthy, well-balanced diet should eat about 130 grams of carbohydrates a day (approximately 45-65% of their calories), whereas the keto diet limits carbohydrates to 4% of the diet. This can lead to constipation and lethargy in children. Moreover, the keto diet removes three of the five food groups that contain essential vitamins and minerals required for a child's growth and development.
The ketogenic diet has been found to be effective in treating infants and toddlers with refractory epilepsy. It has also been proposed for treating other disorders such as inherited metabolic disorders, Prader-Willi syndrome, and some specific types of cancers. However, the diet is very restrictive and can have adverse effects, especially on children whose growing bodies are more susceptible. The most common side effects include gastrointestinal, cardiovascular, renal/genitourinary, and skeletal issues.
There is insufficient research on the long-term health outcomes of the ketogenic diet for children. The diet's impact on growth and nutritional status is not yet fully understood, and more studies are needed to determine whether it is a safe weight-loss method over a long period of time. While the ketogenic diet can be beneficial for children with specific medical conditions, it is not recommended as a weight-loss solution for healthy children and teens.
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Frequently asked questions
The ketogenic, or keto, diet is a very-low-carb, high-fat diet that has been shown to deliver several health benefits. The keto diet was first developed in the 1920s as a treatment for epilepsy.
The keto diet is not recommended for weight loss in children because it seriously limits carbohydrates, and children need carbs to be mentally and physically active. However, doctors might recommend the ketogenic diet to help control seizures in children with epilepsy.
The keto diet may have certain adverse effects on children as it restricts one or more food groups. The risk of side effects increases in children as their growing bodies are more susceptible. The main potential side effects associated with the keto diet in children are constipation and lethargy.
Many doctors and dietitians believe more studies are needed to determine whether the keto diet is a safe weight-loss method over a long period of time. Dietitians recommend establishing healthy habits over specific fad diets for children who need to achieve a healthy weight.











































