How Food and Nutrition May Support Respiratory Health

Asthma is a paroxysmal syndrome of the respiratory system, characterised by severe breathing difficulty, a constricting sensation across the chest and a heavy feeling of imminent suffocation, happening in the absence of fever or limited inflammation. In many cases, asthma or an asthmatic episode is often followed by several days of symptoms suggestive of gastrointestinal disturbance. The symptoms are reduced appetite, acid regurgitation, excessive hunger, abdominal bloating, heartburn, a feeling of pressure over the eyes, anxiety in the precordial area, and skin itching. Asthmatic attacks usually begin at night during night sleep. The signs of Asthma are characterised by marked tightness across the chest, anxiety, difficult breathing, and a dry, short cough. Respiration becomes heavy, gasping, laboured, and suffocative, while the facial expression reflects extreme discomfort and apprehension. Irregular heartbeat is present. The patient always demands that doors and windows be left open, and the need for fresh air becomes overwhelming. There is also an increase to move from bed to an open window, and the patient finds it difficult to remain in a lying position. The pulse to them may look frequently irregular.

Asthma commonly develops in childhood and and for a few others, may come from a complex mix of genetic, environmental, and predispositional influences and is often linked to different symptoms. Asthma researchers continue to identify the risk of different models on individual risks of asthma. Although from a different understanding as asthma may be a genetic condition, and other complaints can be developed due to living environment conditions, the clinical methods of preventing long-term asthma remain limited. Airway inflammation in patients causes heightened bronchial sensitivity and intermittent airflow obstruction. Healthcare professionals provide a diagnosis of asthma through different combination of patient history, lung function testing, physical examinations and relevant lab work. There are many different treatments that focus on continuous patient education, regular symptom management treatment, quick relief inhalers, etc(Varraso et al., 2007).

Immune Responses, Respiratory Health and Dietary Fat Intake

Clinical research has examined the relationship between the immune system and dietary fat intake, and it has shown that patients consuming high-fat meals can activate inflammatory responses. Although based on eating high-fat meals has been associated with raised levels of circulating pro-inflammatory neutrophils and cytokines. Therefore, those immune changes seem to be important for respiratory disease and lung function. There were examined such as expression of Toll-like receptor 4 (TLR4) and also higher neutrophil concentration was discovered in the sputum of patients with asthma after following to eat fat-rich foods. Furthermore, the finding shows that immune mechanisms contribute to inflammation in the airways while consuming high-fat foods and obesity resulting from a high-fat diet damages immune cell function(Wypych, Marsland and Ubags, 2017).

The Role of Diet and Nutrients in Asthma Food Control

Researchers have identified the asthma risk and diet, which has focused on both dietary patterns and nutrients. Dietary patterns express habitual food consumption among populations and individuals, taking into consideration the types of foods eaten, frequency, their combinations and diversity. these nutrients are consumed as part of a complex food matrix; this method offers important advantages when using the diet-health relationship, as the effects of nutrients are common. Therefore, the most frequently studied dietary patterns are the Western diet and the Mediterranean diet. The Mediterranean diet emerged in the 1950s and 1960s in seacoast regions of southern Europe, particularly in Greece and Italy, where this was linked directly to a lower mortality from coronary heart disease. The guidelines for the Mediterranean diet highlight meals rich in vegetables, fruits and whole grain cereals. Vitamin D intake during pregnancy has been linked to a reduced risk of childhood wheeze. Despite these findings, researchers have shown that neither vitamin D nor vitamin E intake has been clearly demonstrated to have a consistent effect on the development of childhood asthma(Guilleminault et al., 2017).

Although no particular recommendations to prevent asthma during pregnancy have been discovered and the guidelines for vitamin D should be followed as an existing guideline, and this should be followed by respiratory medicine specialists.

The Beneficial Effects of Fruits and Vegetables

Clinical respiratory researchers have found that consuming fruits and vegetables appears to be lower risk of Asthma. Consuming vitamin C at a dose of 0.2 gr per day has demonstrated modest improvement in Asthma control, and a monthly administration of 60,000IU of vitamin D can significantly reduce the risk of asthma exacerbations among school-aged children. Therefore, vitamin D supplementation in preschool-aged children has not shown significant impact on subjective asthma control and needs further clinical trial research (Guilleminault et al., 2017).

Minerals for Respiratory Health

Some minerals have an important role in respiratory health and particularly in children; higher intake, such as calcium, magnesium and potassium, has been associated with a lower incidence of asthma. Although due to the high number of experimental studies and observations have been inconsistent findings that reduced dietary sodium did not improve bronchial responsiveness in adults with asthma. Magnesium has been viewed as a bronchodilatory benefit in asthma, with low dietary magnesium linked to harm to bronchial smooth muscle function in severe asthma and reduced lung function in children and it reduces lung function in children. further to this, it needs more evidence before firm conclusions can be drawn regarding its dietary recommendations and its therapeutic value. According to experts, Selenium intake has been considered to be lower among individuals with asthma compared with non-asthmatic individuals and in other aspects has been reported to have higher maternal plasma selenium concentrations have been inversely associated with asthma risk in outcome. Other studies show that in large well well-controlled trials, selenium has not shown any benefits with supplementation. One small Swedish study emphasises that older people with severe conditions had intakes of selenium and folate. Due to this, serum calcium levels were reduced, probably due to inadequate vitamin D intake. Furthermore, minerals tend to influence respiratory health, and the evidence does not support supplements(Berthon and Wood, 2015).

Medical Plants for Respiratory Disease Treatment

Medical plants commonly used to treat respiratory disorders indicate a wide range of biological activities, such as antiallergic, immunomodulatory, and anti-inflammatory, antioxidant and also antiviral effects. Although people suffering from respiratory health conditions, including cold, cough, bronchitis, and asthma, are largely on plant-based remedies. The benefits of herbal treatment is that they can relieve symptoms through multiple mechanisms:

• Anti-inflammatory combinations reduced disease severity.
• Antiallergic agents prevent pathogen-induced allergic responses.
• Immunomodulators build up host immune defences.
• Antioxidants counteract free radicals at sites of infection.
• Antimicrobial properties limited the intervention of respiratory pathogens.

The remarkable expertise of plants to provide novel bioactive combinations is reflected in the global pharmaceutical market, where medical plants represents more than half of all medical products in the medical world. In the world, there are approximately 80% of the population relies on traditional medical plants based on traditional therapies for primary health care. The support has also come from the World Health Organisation, which encourages the consolidation of traditional and modern medicine, while supporting the integration of medical plans and also promotes research based on identifying effective and safe plant-derived drugs. Medical plants are well known for demonstrating favourable, toxicological, pharmacological and clinical profiles. Several plants are well documented in ethnomedicine, such as thyme, peppermint, eucalyptus, liquorice root, ginger, and turmeric, and those are supported by clinical and pharmacological evidence(Idreis, 2025).

Thyme

A therapeutically and nutritionally valuable herb that has been used in ancient times for both culinary and medical purposes. Their essential oil and spices of genus Thymus have antibacterial, antispasmodic, expectorant, antifungal and antioxidant properties that contribute to respiratory health.

Peppermint

Belongs to the Lamiaceae family, and it is a fast-growing perennial herb. It is identified as rich in menthol, but its main active component is essential oil. Peppermint oil is widely used in the cosmetic industry, pharmaceutical, antiseptic, analgesic, antipruritic, anti-inflammatory and antimicrobial activities.

Liquorice Root

Continues to play a crucial role in treating respiratory disorders and as a supplement to conventional therapies. Its use is suggested to be beneficial against inflammatory and infectious conditions, and also in neurodegenerative diseases.

Ginger

Is a valuable rhizomatous herb, and it is known for its aromatic People consume as fresh, dried, or as oil and extracts. Ginger was first used in southern Asia, and it is widely used in the kitchen, in medicine to manage gastrointestinal disorders, metabolic diseases, inflammatory ailments and cardiovascular conditions.

Turmeric

Has notable anti-catarrhal properties, and it is used for many treatments, such as treating catarrhal conditions of both lower and upper respiratory tracts. Its expectorant action helps in the removal of mucus from the respiratory passages, and it reduces congestion, combined with respiratory infections(Idreis, 2025).

Indoor Humidity for Asthma Prevention

Knowing that fungal spores and dust mites are extremely significant. The relative humidity is maintained below around 45% at temperatures of 20-22 °C, where under these conditions house dust mites are difficult to survive. Although clinical research indicates that higher humidity levels promote a rapid rise in mite populations, this contrast means reaching a few thousand mites per gram of household dust. Increased indoor humidity also supports fungal growth. It is crucial that approximately 60% of recent identified cases of asthma, which can be linked to house dust mites, can be linked to excessive indoor humidity. Preventing methods focus on increasing ventilation and reducing moisture generated indoors. Ventilation should be easy and flexible, but not fixed, and therefore, all humidity levels should always be controlled at a value that prevents the proliferation of allergenic organisms (Andersen and Korsgaard, 1986).

Short-Chain Fatty Acids (SCFAs)

SCFAs can be picked up from certain foods, including some of the cheeses, butter, cow milk, and these are at a point produced through the fermentation of complex bacterial polysaccharides present in dietary fibres. Short-chain fatty Acids are well known for their inflammatory effects in vitro. Further to this, both Short-Chain Fatty Acids and high fibre diets supplementation have been recognised to reduce inflammation in animal models of diseases, including peanut allergy, airways inflammation peanut allergy, colitis, and allergic airways inflammation. The procedures through which Short-Chain Fatty Acids exert their effect are varied. Short-Chain Fatty Acids can contribute to regulatory T helper cells, and decrease the capability of dendritic cells to activate effector T cells and start the inflammasome.

Studies have indicated that mice fed a high fiber diet point out an increased ratio of Bacteroidetes to Firmicutes in both lungs and gut. Pro-inflammatory is generally considered both Saturated and omega-6 polyunsaturated fatty acids(Wypych, Marsland and Ubags, 2017).

Learn More

For further reading on respiratory health and nutrition, you can visit these trusted resources:

• CDC – Asthma Information
• World Health Organization – Asthma Fact Sheet
• NHS – Asthma Overview and Nutrition Tips

Medical Disclaimer: I am not a medical professional and this article is based on personal research and experience . It is for informational and educational purposes only. Please consult alwats your doctor for advice or a qualified healthcare provider before making any changes to your diet,

References

• Andersen, I. and Korsgaard, J. (1986) ‘Asthma and the indoor environment: Assessment of the health implications of high indoor air humidity’, Environment International, 12(1–4), pp. 121–127. Available at: https://doi.org/10.1016/0160-4120(86)90022-X.
• Berthon, B. and Wood, L. (2015) ‘Nutrition and Respiratory Health—Feature Review’, Nutrients, 7(3), pp. 1618–1643. Available at: https://doi.org/10.3390/nu7031618.
• Guilleminault, L. et al. (2017) ‘Diet and Asthma: Is It Time to Adapt Our Message?’, Nutrients, 9(11), p. 1227. Available at: https://doi.org/10.3390/nu9111227.
• Idreis, N.E.M. (2025) ‘Medical Plants for Respiratory Diseases’, 7 Issue 1 2025, p. 95.
• Varraso, R. et al. (2007) ‘Prospective study of dietary patterns and chronic obstructive pulmonary disease among US women’, The American Journal of Clinical Nutrition, 86(2), pp. 488–495. Available at: https://doi.org/10.1093/ajcn/86.2.488.
• Wypych, T.P., Marsland, B.J. and Ubags, N.D.J. (2017) ‘The Impact of Diet on Immunity and Respiratory Diseases’, Annals of the American Thoracic Society, 14(Supplement_5), pp. S339–S347. Available at: https://doi.org/10.1513/AnnalsATS.201703-255AW.