Nearly 26 million Americans have asthma. In 2020, over 40% of affected children and adults experienced at least one asthma attack. Asthma accounts for almost five million doctor visits, not including emergency department visits, and $50 billion in medical costs annually. On average, ten people die from asthma daily in the United States; nearly all these deaths are avoidable with the right treatment. This article will discuss the importance of an integrative treatment plan, including the conventional and complementary treatment options that may be considered in managing patients with asthma. (13)
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What Is Asthma?
Asthma is a chronic respiratory condition characterized by chronic inflammation and hyperreactivity of the airways. Asthma attacks result from exposure to a trigger, which causes smooth muscle constriction, a proinflammatory immune response, and mucus production in the airways that obstructs airflow and makes breathing difficult.
If asthma is severe or poorly controlled, irreversible changes, called airway remodeling, can occur over time. These changes involve structural modifications, such as thickening of the airway walls, enlargement of smooth muscle cells, and an excess accumulation of mucus, that contribute to persistent airway obstruction and reduced lung function. (15)
Asthma Signs & Symptoms
The main symptoms of asthma include recurrent episodes of wheezing, shortness of breath, chest pain and tightness, and coughing that vary in frequency and intensity.
During an acute exacerbation, depending on the severity of the attack, patients may show signs of respiratory distress, which include sitting forward to help open the airways, cyanosis of the lips and nails, and confusion. A physical exam will reveal a bilateral expiratory wheeze on auscultation of the lungs, mild tachycardia (a common side effect of bronchodilating medications), and reduced oxygen saturation and peak expiratory flow. (15)
What Causes Asthma?
Asthma is considered a complex disease involving a combination of genetic and environmental factors.
Allergic, or extrinsic, asthma is triggered by exposure to specific allergens that the immune system recognizes as harmful. These allergens include pollen, dust mites, pet dander, mold spores, and certain foods. When individuals with allergic asthma come into contact with these allergens, their immune system overreacts, leading to airway inflammation, constriction, and the typical asthma symptoms. Allergic asthma often coexists with other allergic conditions like allergic rhinitis (hay fever) and atopic dermatitis (eczema) - collectively called the allergic triad. (10)
Nonallergic, or intrinsic, asthma is triggered by factors other than allergens. These triggers include respiratory infections, exercise, cold air, irritants (such as smoke, strong odors, or chemicals), stress, and hormonal changes. Nonallergic asthma involves airway inflammation and constriction due to mechanisms other than an allergic immune response. (17)
Functional Medicine Labs to Test for Root Cause of Asthma
Patients with suspected asthma should be referred to a pulmonologist for lung function testing. Spirometry is the primary diagnostic method of choice for asthma; it measures the amount of air the patient can exhale forcefully and how quickly they can do it.
Peak flow monitoring is another test the patient can easily perform in the primary care setting and at home. It involves using a peak flow meter to measure how well the patient can forcefully exhale air. Regular peak flow monitoring can help track changes in lung function, identify asthma triggers or worsening symptoms, and guide treatment decisions.
Functional medicine labs play a role in understanding the underlying factors contributing to asthma. Discussed below are common labs that functional and integrative doctors may order for their patients with asthma.
Comprehensive Stool Test
Emerging research highlights the potential link between gut health and asthma, with the gut microbiome possibly playing a role in asthma development and progression. Alterations in gut bacteria composition and diversity, known as dysbiosis, may increase the risk of asthma, while beneficial bacteria like Bifidobacterium and Lactobacillus species might support respiratory health. The gut-lung axis connects gut health and asthma through immune response modulation, influencing allergic reactions and airway inflammation. Additionally, the gut microbiome's production of substances like short-chain fatty acids (SCFAs) contributes to immune system balance and may affect asthma outcomes. (7, 19)
Understanding this, a comprehensive stool test may help identify inflammation, SCFA levels, and dysbiotic patterns within the gastrointestinal tract that can contribute to immune hyperreactivity and asthma severity.
Allergy Testing
Since allergen exposure plays a significant role in triggering asthma attacks, identifying and managing allergens is critical to a successful asthma management plan. A comprehensive allergy test measures IgE reactions to common environmental and food antigens.
Comprehensive Nutritional Assessment
A comprehensive nutritional assessment screens for imbalances in essential nutrients that can contribute to immune dysregulation and inflammation. Additionally, these panels often include oxidative stress markers, representing how effectively the body's antioxidant systems can manage reactive oxygen species and repair the resulting damage. This test helps personalize dietary and supplement considerations to the patient's cellular needs.
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Conventional Treatment for Asthma
The conventional stepwise treatment approach for asthma involves a systematic progression of medications and treatment strategies based on the severity and control of asthma symptoms. This approach is outlined in guidelines provided by organizations such as the Global Initiative for Asthma (GINA) and the National Asthma Education and Prevention Program (NAEPP). Short-acting bronchodilators (SABA), inhaled corticosteroids (ICS), and long-acting bronchodilators (LABA) are the predominant classes of medications prescribed for managing asthma. Depending on individual circumstances, oral corticosteroids, leukotriene receptor antagonists (LTRA), and biologics may be considered as other add-on medications.
Functional Medicine Treatment Protocol for Asthma
It is important to note that a functional medicine approach to treatment should not undermine the importance of pharmaceutical intervention. Uncontrolled asthma can lead to irreversible airway pathology and severe, life-threatening attacks. However, using complementary modalities, including evidence-based nutrition and supplements, to address the underlying factors of the disease may support treatment outcomes and disease management, potentially resulting in decreased reliance on prescription medications.
Therapeutic Diet and Nutrition Considerations for Asthma
According to a 2018 study that examined the association between diet and asthma symptoms, an anti-inflammatory diet characterized by nutrient-dense whole foods and low in processed foods may be beneficial for overall asthma management.
Anti-inflammatory diets aim to promote overall health and reduce systemic inflammation by emphasizing foods with anti-inflammatory properties and avoiding those known to promote inflammation and immune reactivity. Perhaps the most well-known and studied anti-inflammatory diet is the Mediterranean diet. Rich in antioxidants and healthy fats, studies suggest this diet may support respiratory health by managing respiratory symptoms.
Supplements Protocol for Asthma
The following supplements have been studied for their potential role in supporting asthma management.
Magnesium
Magnesium has many beneficial effects on the body that may support asthma management. Magnesium promotes bronchial smooth muscle relaxation, is anti-inflammatory, and supports histamine metabolism. Low magnesium status has been associated with more severe asthma presentations. Intravenous and inhaled preparations of magnesium are administered in emergency settings for acute exacerbations of asthma, and long-term oral administration has been shown to support bronchial health and improve peak flow measurements and patient quality of life. (28)
Dose: 300-500 mg daily
Duration: 6 months
Vitamin C
As an antioxidant, vitamin C may help protect against oxidative stress and reduce inflammation, factors that can influence asthma. It may also support lung function by having a direct bronchodilator effect on the tracheal smooth muscle. Furthermore, vitamin C enhances the function of the immune system and strengthens respiratory defenses, potentially reducing the frequency and severity of respiratory infections that can trigger asthma exacerbations.
Dose: 500-2,000 mg daily
Duration: at least two weeks
Fish Oil
Fish oil is concentrated in omega-3 fatty acids, which have anti-inflammatory properties. Omega-3 supplementation may help manage the production of chemical mediators involved in allergic inflammation by altering the ratio of omega-6 to omega-3 fatty acids in cell membranes. Research also suggests that fish oil supplementation may support respiratory health in children. (28)
Dose: 2,000-5,000 mg combined EPA + DHA daily
Duration: at least 6-8 weeks
Boswellia
The boswellic acids concentrated in Boswellia possess anti-inflammatory properties by influencing pro-inflammatory enzymes and the production of inflammation cytokines. Supplementing with Boswellia extract has been studied for its potential to support respiratory health, reduce asthmatic symptoms, and improve lung function scores (11, 14).
Dose: 500-900 mg daily, in split doses
Duration: 4-6 weeks
When to Retest Labs
With satisfactory medication administration technique and treatment adherence, patients may observe improvements in the frequency of symptoms, the extent of symptom interference with daily activities, and reliance on quick-relief medications within 4-6 weeks. If a clear benefit is not observed within this timeframe, consider consulting with a healthcare provider to discuss stepping up in the pharmaceutical intervention and adjusting complementary therapies. Alternatively, if a patient's symptoms are well-controlled and stable for at least three months, it is reasonable to explore stepping down medications and supplements under professional guidance.
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Summary
Asthma is a chronic respiratory condition characterized by airway inflammation and hyperreactivity. Uncontrolled asthma can cause permanent changes to the airways, resulting in reduced lung function, and can be life-threatening. While a conventional pharmaceutical approach to treatment is essential in safely managing asthma, integrative medicine provides complementary options that may help reduce inflammation, modulate the immune system, and support lung function.
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