# Nutrition in mucopolysaccharidosis
Energy requirements and growth
Children and adults with mucopolysaccharidosis often have increased energy requirements, especially during periods of growth delay or when the body is intensively struggling with the disease. The accumulation of polysaccharides in various organs can affect metabolism.
ResearchediPositive results in clinical studies, not yet standard treatment
Regular monitoring of weight and height growth helps provide insight into whether current food intake matches energy requirements. This is a topic that your healthcare provider or paediatrician can discuss together with a dietitian, because individual circumstances vary greatly.
Chewing and swallowing problems
Many people with mucopolysaccharidosis eventually experience difficulties with chewing and swallowing due to changes in facial structure, oral hygiene and muscle tone. Accumulations in and around the airway can worsen this. This can mean that certain food consistencies are better tolerated than others.
Adapted nutrition – for example softer or minced variants, or tube feeding – may be necessary to ensure adequate nutritional intake safely.
ProveniIncluded in official guidelines, or approved by EMA or FDA
A speech therapist or dietitian can provide tailored advice, because what works well depends on the individual stage of the disease and the severity of swallowing problems.
Stomach and intestinal function
The accumulations that are characteristic of mucopolysaccharidosis can also occur in the digestive system. This can be accompanied by disturbed bowel motility, constipation or otherwise irregular bowel movements.
ResearchediPositive results in clinical studies, not yet standard treatment
Some patients also experience a sensitive stomach.
Eating regularly in smaller portions, adequate intake of fluid-rich foods and conscious attention to fibre composition can help, but what really works is very personal. A dietitian can determine what works best in practice.
Nutritional interactions with enzyme therapy
Patients receiving enzyme replacement therapy (ERT) sometimes experience gastrointestinal problems as a side effect of treatment.
ResearchediPositive results in clinical studies, not yet standard treatment
The timing of meals in relation to infusions can be important. Moreover, certain medicines (for example certain antibiotics for infections) may be better or worse tolerated together with food.
Your healthcare team can advise on how to arrange nutrition around treatment schedules. This is not something to do yourself, but certainly something to discuss with your doctor and dietitian.
Antioxidants and anti-inflammatory agents
Research suggests that oxidative stress and chronic inflammation play a role in the progression of mucopolysaccharidosis.
ExperimentaliOngoing in study setting, outcome still unknown
This has led to interest in nutritional components with antioxidant activity, such as polyphenols from vegetables, fruit and certain herbs.
At present, there is no evidence that a specific 'antioxidant diet' can alter the course of the disease. Eating a varied, colourful meal with vegetables and fruit supports general health, but you should not expect therapeutic effects from this. Supplements with isolated antioxidants are unproven for this disease and may even interact with medicines.
Spermidine and polyamines
A recent study (2026) investigated short-term oral spermidine supplementation in animal models of mucopolysaccharidosis type III.
ExperimentaliOngoing in study setting, outcome still unknown
The results were cautiously positive for certain neurodegenerative aspects, but this is still entirely in the research stage and has not been evaluated in humans.
Spermidine occurs naturally in food (including in mature cheese, grains and certain meat products), but do not intentionally increase this or take it as a supplement without explicit advice from your doctor. This is research material, not a proven treatment.
Liver and kidney function
Because mucopolysaccharidosis can affect multiple organs, liver and kidney function are regularly monitored.
ResearchediPositive results in clinical studies, not yet standard treatment
Dietary choices can affect these organs, especially when their function is already limited. A dietitian can help adjust food composition (for example, sodium amount, protein quality) if needed, based on current blood values and your doctor's assessment.
Infection risk and food intake
People with mucopolysaccharidosis sometimes have a weaker immune system or more frequent infections, especially of the airways and ears. This can disrupt food intake (for example, through poor appetite, pain when swallowing).
ResearchediPositive results in clinical studies, not yet standard treatment
Adequate nutrition – both in calories and nutrients – is important for immune function, but no special 'infection diet' is needed.
Hygiene in food preparation and avoiding raw meat and non-pasteurized dairy are standard precautions that have extra value when immunity is reduced.
Calcium and bone metabolism
Recent studies (2026) show that patients with mucopolysaccharidosis often have abnormalities in bone mineral density, including those receiving enzyme replacement therapy.
ResearchediPositive results in clinical studies, not yet standard treatment
This may be related to reduced mobility, abnormal growth, and metabolic consequences of the disease itself.
Adequate intake of calcium and vitamin D supports bone health, but this is not a substitute for other forms of care (exercise, monitoring of bone density). Regular appointments with your doctor about bone health and nutritional needs are important.
Nutrition with tube feeding
Some patients can no longer eat and drink adequately by mouth and need nutrition through a tube (nasogastric tube or PEG).
ProveniIncluded in official guidelines, or approved by EMA or FDA
This is not so much a choice as a necessary measure to prevent malnutrition and complications. The doctor and dietitian together determine what kind of nutrition is provided and at what rate.
This is a medical matter and not something you manage yourself.
Fluid and electrolyte balance
Depending on the severity and form of mucopolysaccharidosis, the kidneys, heart, and intestines can be affected in such a way that fluid and salt balance is disrupted.
ResearchediPositive results in clinical studies, not yet standard treatment
Nutrition can play a role here, but usually the medical team monitors this closely with blood tests and advises individualized adjustments.
Summary
There is no specific 'mucopolysaccharidosis diet'. What is important: warm contact with your treatment team, including a dietitian who understands your disease and stage. Nutritional changes must be tailored to your chewing and swallowing ability, energy needs, organ function, and the medicines you take.
Experimental nutrients such as spermidine are research subject matter, unproven, and should not be tried casually. Supplements without medical supervision can cause interactions. Instead, stick to regular check-ups and open conversations with your doctor and dietitian about what you eat and how you feel.
_This information never replaces a doctor's judgment. Always discuss your situation with your own healthcare provider._