Asthma is a common long-term condition in which the airways become inflamed and narrower, making breathing more difficult. Symptoms include wheezing, coughing, breathlessness and a tight feeling in the chest. They often come and go and may be worse at night or early in the morning.
Triggers differ between people. They can include viral infections, pollen, mould, dust mites, animals, smoke, air pollution, cold air, exercise and substances encountered at work. Identifying patterns can help, but asthma is not simply an allergy and a trigger may vary over time.
Diagnosis and essential treatment
Recognising serious symptoms
Anyone with recurring asthma-like symptoms should see a GP. Assessment may include breathing tests, peak-flow monitoring and sometimes blood tests. Other conditions can produce similar symptoms, so diagnosis should not be based on wheezing alone.
The main treatment is inhaled medicine. Current NHS care may involve an anti-inflammatory reliever inhaler used when symptoms occur, a maintenance-and-reliever inhaler used regularly and when needed, or separate preventer and reliever inhalers. A blue reliever inhaler should not normally be used as the only treatment. Correct inhaler technique is crucial, and a pharmacist, nurse or doctor can check it.
Everyone with asthma should have a written or digital action plan explaining daily treatment and what to do if symptoms worsen. A review is needed at least annually and sooner if symptoms interrupt normal activity, wake someone at night or require increasingly frequent reliever use.
An asthma attack can be life-threatening. Sit upright, try to remain calm and follow the action plan. Call 999 if symptoms worsen, the maximum advised reliever dose does not help, or no inhaler is available.
Food, weight and daily life
There is no general “asthma diet.” A balanced pattern built around vegetables, fruit, pulses, whole grains, protein foods and unsaturated fats supports general health. Maintaining a healthy weight can improve breathing and reduce the risk of poorly controlled symptoms.
Food allergy can trigger breathing symptoms in some people, but broad exclusion of milk, wheat or additives is not appropriate without a convincing history and professional assessment. Suspected allergy—particularly if breathing difficulty follows a food—requires medical advice because serious allergic reactions need an emergency plan.
Regular activity is encouraged. Exercise can trigger symptoms, but well-managed asthma should not prevent an active life. Ask the asthma team about warming up, inhaler timing and safe progression. Avoid smoking and second-hand smoke, keep recommended vaccinations up to date and reduce exposure to known triggers where practical.
Useful supplements
Supplements should be selected for the individual rather than used automatically. Product directions and advice from an appropriately qualified professional should take precedence over general information.
| Supplement | Effects |
|---|---|
| High-dose multivitamin and mineral formula | Intended to provide immune and adrenal support. |
| Magnesium citrate | Helps relax muscles and open the airways, making breathing easier. |
| Zinc citrate | Supports anti-inflammatory processes. |
| Vitamin B5 (pantothenic acid) | Intended to support adrenal function. |
| Vitamin B6 (pyridoxal-5-phosphate) | Intended to support adrenal function. |
| Vitamin C | Helps inhibit inflammatory chemicals and supports adrenal function. |
| Krill oil or marine fish oil containing EPA and DHA | Helps inhibit inflammatory chemicals and supports adrenal function. |
| Ginkgo biloba extract | Intended to dilate small blood vessels and inhibit inflammatory chemicals. |
| Vitamin D | Has been associated with a reduced allergic response. |
| Spirulina | Supports anti-inflammatory processes. |
| Anthocyanidins, such as grapeseed or bilberry extract | Help inhibit inflammatory chemicals. |
Supplements do not open the airways reliably during an attack and must never replace inhalers. Magnesium used in hospital for severe asthma is not equivalent to self-prescribing an oral supplement. Ginkgo and fish oils may interact with medicines, while excessive zinc, vitamin D or other nutrients can cause harm.
Keeping asthma controlled
Good asthma care is practical and preventive: use inhalers as directed, check technique, understand the action plan, avoid smoke and review changes promptly. Nutrition can support general wellbeing, but it sits alongside—not instead of—anti-inflammatory inhaled treatment and professional monitoring.
Looking for personalised nutrition and lifestyle support? An FNTP member may be able to help you explore an approach suited to your individual needs. Find an FNTP practitioner.
This article is for general education and does not replace individual medical advice, diagnosis or treatment.
