Nutrition can play an important role in living well with aspergillosis and other long-term lung conditions. Although diet alone cannot treat fungal disease, maintaining good nutrition can support strength, recovery, immune function and overall wellbeing.
Many people with chronic lung disease experience changes in appetite, weight or muscle strength. Some lose weight unintentionally, while others may find it difficult to maintain energy or strength during long periods of illness.
This page explains why nutrition matters and how patients can support their health through sensible eating habits.
Key Points
- Good nutrition supports strength, recovery and general health.
- Weight loss can occur in chronic lung disease and should be discussed with a clinician.
- Small, frequent meals are sometimes easier than large meals.
- Maintaining muscle strength is important for breathing and daily activity.
- Changes in appetite, weight or digestion should be monitored.
Why Nutrition Matters in Lung Disease
Breathing requires energy. When the lungs are working harder than usual, the body may burn more energy simply to breathe. At the same time, symptoms such as fatigue, cough, medication side effects or poor appetite may make eating more difficult.
Over time, this imbalance can lead to weight loss or loss of muscle strength. Muscle strength is important not only for movement but also for breathing, because many muscles assist the lungs during respiration.
Unintended Weight Loss
Some people with chronic aspergillosis or other lung diseases notice gradual weight loss. This may occur because:
- appetite is reduced
- energy needs are higher
- fatigue makes preparing food harder
- medications affect taste or digestion
- ongoing inflammation increases metabolic demand
If weight loss is noticeable or ongoing, it is important to mention this to a doctor or nurse.
Support from an NHS Dietitian
If nutrition or weight becomes a concern, your doctor or specialist team may refer you to a dietitian. Dietitians are healthcare professionals who specialise in helping people manage nutrition when illness affects appetite, weight or digestion.
An NHS dietitian can help with:
- assessing whether weight loss or poor nutrition is a problem
- advice on maintaining energy intake
- practical ways to improve appetite
- adapting diet when fatigue makes cooking difficult
- supporting recovery of weight and muscle strength
- special nutritional supplements when needed
Dietitians work closely with doctors, nurses and physiotherapists as part of the wider care team. If you are losing weight, struggling to eat, or concerned about nutrition, it may be helpful to ask whether referral to a dietitian would be appropriate.
Maintaining Energy and Strength
Maintaining adequate calorie intake helps support daily activity and prevent loss of muscle strength. Some people find it easier to manage nutrition by:
- eating smaller meals more frequently
- choosing foods that provide sustained energy
- including protein sources to support muscle strength
- keeping simple meals available for days with low energy
- staying well hydrated unless advised otherwise
Good nutrition supports overall health even though it does not replace medical treatment.
Protein and Muscle Strength
Muscle strength can decline during long periods of illness or reduced activity. Maintaining protein intake can help support muscle maintenance and recovery.
Examples of protein sources include:
- eggs
- fish
- lean meat
- dairy products
- beans and lentils
- nuts and seeds
The goal is not necessarily a special diet but a balanced intake that supports strength.
Hydration
Staying well hydrated can help support general health and may help mucus remain easier to clear from the airways. Dehydration can worsen fatigue and may contribute to thicker secretions.
Fluid needs vary depending on individual health conditions, medications and climate.
Medication Effects on Appetite
Some treatments may influence appetite, digestion or weight. For example:
- some antifungal medicines may cause nausea or stomach discomfort
- steroid treatment may increase appetite or alter weight distribution
- other medicines may affect taste
If medication side effects make eating difficult, it is important to mention this to a clinician.
Fatigue and Eating
Fatigue can make shopping, cooking and preparing meals difficult. On very low-energy days, even simple meals may feel like a major effort.
Helpful strategies may include:
- keeping easy-to-prepare foods available
- preparing larger meals when energy allows and freezing portions
- accepting help from family members or carers
- using prepared or convenience foods when necessary
These approaches are practical ways to support nutrition during difficult periods.
When to Seek Medical Advice
Changes in nutrition or weight may sometimes indicate a change in health.
Medical advice should be sought if:
- there is significant or unexplained weight loss
- appetite remains poor for an extended period
- persistent nausea or vomiting occurs
- there is difficulty swallowing or eating
- nutrition problems are affecting strength or recovery
Common Questions
Is there a special diet for aspergillosis?
There is no specific diet that treats aspergillosis. However, balanced nutrition helps support general health and recovery.
Should I avoid certain foods because of mould?
For most people, ordinary foods are safe when stored and handled correctly. Avoiding obviously spoiled or mouldy foods is sensible for general health.
Does weight loss matter?
Yes. Unintentional weight loss can reduce strength and resilience. It should be discussed with a clinician if it occurs.
Where to Go Next
- Living with Aspergillosis
- Managing Fatigue and Energy
- Breathlessness and Exercise
- Treatment and Management
- Search the Knowledge Hub
Last reviewed: March 2026