# Nutrition in Pompe disease
In Pompe disease, nutrition is central because the body has difficulty breaking down glycogen (a form of stored sugar). This affects not only the muscles, but also the stomach and intestines. Research shows that nutrition can have significant impact on how someone feels and how well treatment works.
Protein-rich nutrition
ResearchediPositive results in clinical studies, not yet standard treatment
High-protein nutrition means eating more food with plenty of protein daily — such as meat, fish, eggs, cheese, yoghurt, legumes and nuts — and fewer carbohydrates. The idea is that muscles can grow and recover better when enough protein is available.
Research from 2023 showed that children with Pompe who combined physical training with a nutrition pattern richer in protein built more muscle strength and reported less fatigue. Their overall physical quality of life also improved. This suggests that protein can play a useful role in supporting muscle strength.
The exact amount and composition is not fully understood. Because Pompe can also affect the digestive system — with stomach complaints, delayed digestion and sometimes swallowing difficulties — the approach is highly dependent on what someone can tolerate. Some benefit from more frequent small meals rather than three large meals.
Slow carbohydrates (complex carbohydrates)
ResearchediPositive results in clinical studies, not yet standard treatment
This pattern limits fast sugars (white bread, sweets, soft drinks) and focuses on slowly working carbohydrates — brown rice, wholemeal bread, vegetables, fruit and legumes. The goal is a more stable blood sugar level.
In Pompe patients, sugar metabolism is disrupted because the body cannot break down glycogen properly. A 2026 study on continuous glucose monitoring showed that the effect of slow carbohydrates on daily blood sugar levels is more limited than sometimes expected — especially over the long term. This does not mean that choosing slow carbohydrates is pointless, but one should realise that this diet alone is not a complete solution.
However, many patients report feeling more stable energy levels and less dizziness when they eat regularly and at fixed times. For those with digestive problems, the benefit of slow carbs may also lie in their softer, more digestible form.
Cornstarch (corn flour)
ResearchediPositive results in clinical studies, not yet standard treatment
Cornstarch is a home-made or pre-packaged form of cooked corn starch, intended to keep blood sugar slowly and sustainably stable — especially overnight or between meals. It has been used for decades in certain glycogen storage diseases.
However, recent research from 2026 brought scepticism to light. A study using continuous glucose monitoring showed that cornstarch, when taken during the day, had much less effect on blood sugar stability than previously assumed. Patients using cornstarch did not see their blood sugar become significantly more stable compared to those without it.
In Pompe disease — unlike other glycogen storage diseases — cornstarch may play a smaller role. This is an area where more research is needed and where advice can vary greatly per patient. If cornstarch is considered, this should be done under strict supervision of the treating physician.
Restriction of certain nutrients
ResearchediPositive results in clinical studies, not yet standard treatment
In Pompe disease, certain substances in food can be complicated. For example, much fat can be broken down slowly and cause digestive problems; much fibre can also cause stomach complaints if the digestive system is affected. A 2026 study on gastro-intestinal complaints in Pompe patients receiving enzyme replacement therapy indicated that nutrition can play an important role here.
Adjusting fat and fiber content — for example, by choosing grilled fish and white rice instead of fatty meat and whole grain products — can relieve digestive problems. However, this is very individual. Some people feel much better with more fiber; others experience more problems. Customized approaches are essential here.
Nutrition around infections and vaccines
ResearchediPositive results in clinical studies, not yet standard treatment
Pompe patients often have a weaker immune system and can become more seriously ill from infections. A 2023 study on COVID-19 and vaccination in lysosomal storage diseases showed that nutrition plays a role in immune function. This does not mean that a specific diet prevents COVID, but rather that good nutritional status supports general resistance.
During periods around vaccination or infection, nutrition may need to be lighter and more digestible. This is usually determined in consultation with the treating physician.
Nutrition during therapy and pregnancy
ResearchediPositive results in clinical studies, not yet standard treatment
Women with Pompe who undergo enzyme replacement therapy can become pregnant and breastfeed. Research from 2025 showed that nutrition remains important during these periods, but also remains confusing — especially since nutritional strategy and medication use can influence each other.
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**Nutrition is not a one-time choice, but a continuous process of adjustment.** In Pompe, gastrointestinal problems, muscle strength, blood sugar stability, and individual tolerance all play a role. What works well for one patient may be unsuitable for another. This is why nutritional choices must always be determined in consultation with the treating physician or a specialized dietitian — especially since they can also be related to medications and therapy.
_This information never replaces a doctor's judgment. Always discuss your situation with your own healthcare provider._