The Opportunities and Challenges of the Ketogenic Diet For Epilepsy

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Food and nutrition are rarely thought of as an approach to improve symptoms of neurological disorders, yet for some people with epilepsy, changing what they eat can significantly reduce seizures.

Epilepsy is a neurological disorder that causes recurrent and unprovoked seizures due to abnormal electrical activity in the brain. It affects approximately 70 million people worldwide. The most common treatment for epilepsy is anti-seizure medication, and for many people this treatment is effective. However, one third of people have drug resistant epilepsy where medication does not successfully control their seizures. In these cases, doctors may recommend alternative treatments, such as the ketogenic diet.

As a master’s degree student on a Psychology and Neuroscience of Mind-Body-Interface course, I’m particularly interested in how metabolic interventions such as dietary therapies can influence neurological conditions like epilepsy, and how these treatments can be realistically implemented in everyday life. Today is epilepsy awareness day, a day dedicated to raising awareness and understanding of epilepsy and I wanted to highlight an alternative treatment that could be useful for people with drug resistant epilepsy.

What Is The Ketogenic Diet and How Does It Help People With Epilepsy?

One of the most established dietary approaches for managing epilepsy is the ketogenic diet. The diet involves eating foods that are high in fat, moderate in protein and low in carbohydrates. Meals are likely to include eggs, cheese, meats, fish, oil, avocado, and nuts. Foods such bread, pasta, potatoes, rice or sugary snacks are limited.

When the body receives very little carbohydrates, it begins to burn fat for energy instead, which creates a molecule called ketones. In the 1920s, the diet was first introduced as a treatment for epilepsy after research showed that fasting suppressed seizures and the ketogenic diet could create similar effects in the body.

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The ketogenic diet is effective especially for treating children with drug resistant epilepsy, with studies showing that they are 6 times more likely to achieve a 50% or more reduction in seizures and 3 times more likely to become seizure free compared with those who receive standard treatment. Adults are less likely to become seizures free than children, but are still 5 times more likely to have a 50% or more reduction in seizures.

There are also other benefits to the ketogenic diet: people often report feeling more alert, aware and responsive, and families of children who receive the treatment report improvements in behaviour, awareness, learning ability and development.

How Does It Work?

Researchers are still working to fully understand exactly how the ketogenic diet improves epilepsy symptoms, but there are several theories about how altering the brain’s energy supply might stabilise brain activity. For example, the ketogenic diet may help to:

• Correct neurochemical imbalances in the brain

• Reduce excessive brain activity that can lead to seizures

• Improve the quality of deep sleep, as a lack of sleep is a known trigger for seizures

• Improves gut health by changing the balance of ‘good’ and ‘bad’ bacteria in the intestinal system, which may help to stabilise brain activity and reduce the chance of having a seizure

• The diet produces molecules called ketones which may help to calm down activity in the brain and produce a similar effect to anti-seizure medication

• The diet might help the cells in the brain become more efficient at producing energy which may help to prevent seizures

  
  

The Practical Challenges of The Ketogenic Diet

While the science behind the ketogenic diet is positive, following the diet in everyday life can be challenging. The ketogenic diet is not simply a change in eating habits; it’s a highly structured medical treatment. When you first get prescribed the ketogenic as a treatment it needs to be formulated by a professional based on your age, activity level, and growth for children to make sure that it is safe and nutritionally adequate.

When you are on the diet you must follow a strict macronutrients ratio, carefully plan meals and in some cases weighing your food. Alongside maintaining the diet, you need to keep track of your blood ketone and glucose levels in addition to regular check ins with dieticians and doctors. After two years, the effects of the diet will be evaluated, and a decision will be made whether you should continue or stop the diet.

For families and patients managing epilepsy, maintaining such a regimented diet can be demanding and time consuming. Everyday situations such as eating out, school lunches or social events can become complicated when you are no longer allowed to eat common food. While many people experience meaningful reductions in seizures, the level of organisation and commitment required, can make the diet difficult to sustain for a long time.

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Beyond the practical challenges of maintaining the ketogenic diet, social and economic factors also influence who has access to this treatment. The ketogenic diet relies heavily on high fat ingredients such as dairy products, oils, nuts, and specialised low-carbohydrate alternatives, which can often be more expensive than a regular diet. For people already experiencing financial pressures, maintaining these dietary requirements on a daily basis may not be possible. The ongoing cost of living crisis in the UK has intensified this issue, as rising food prices have increased food poverty and affected people’s food choices.

Time and knowledge also play an important role. Preparing ketogenic meals requires careful planning, nutritional understanding, and consistent monitoring of ingredients. For households balancing work, childcare and other responsibilities, maintaining such consistency can be extremely difficult. Access to the specialist professionals and epilepsy clinics needed to use the ketogenic diet safely can be difficult, particularly for people living in areas with limited healthcare services.

What’s Next?

Researchers and clinicians are increasingly exploring ways to make ketogenic therapies more accessible and easier to maintain. In the UK, some people with drug resistant epilepsy can receive ketogenic diet treatment through the NHS, where a dietitian will help them to safely implement and monitor the diet.

At the same time, new approaches are being developed, one example is K.Vita supplements, which are designed to raise ketone levels without requiring a highly restrictive diet. Researchers are also investigating modified versions of the ketogenic diet that are less restrictive which may be easier for patients and families to sustain. While these developments are promising they do not remove all barriers but are a positive step forward to making the treatment more accessible for everyone.

Conclusion

For some people with epilepsy, the ketogenic diet can significantly reduce seizures and improve quality of life. However, ketogenic therapy also highlights a broader challenge in medicine: treatments must not only be effective, but also realistic for the people who need them. As research into metabolic therapies continues to develop, ensuring that treatments are accessible is an essential part of improving care for people living with epilepsy.