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1.  The impact of food allergy on asthma 
Food allergy is a potentially severe immune response to a food or food additive. Although a majority of children will outgrow their food allergies, some may have lifelong issues. Food allergies and other atopic conditions, such as asthma, are increasing in prevalence in Western countries. As such, it is not uncommon to note the co-existence of food allergy and asthma in the same patient. As part of the atopic march, many food allergic patients may develop asthma later in life. Each can adversely affect the other. Food allergic patients with asthma have a higher risk of developing life-threatening food-induced reactions. Although food allergy is not typically an etiology of asthma, an asthmatic patient with food allergy may have higher rates of morbidity and mortality associated with the asthma. Asthma is rarely a manifestation of food allergy alone, but the symptoms can be seen with allergic reactions to foods. There may be evidence to suggest that early childhood environmental factors, such as the mother’s and child’s diets, factor in the development of asthma; however, the evidence continues to be conflicting. All food allergic patients and their families should be counseled on the management of food allergy and the risk of developing co-morbid asthma.
PMCID: PMC3047906  PMID: 21437041
food allergy; diagnosis; treatment; asthma
2.  Asthma and Mood Disorders 
The high rate of comorbidity of asthma and mood disorders would imply the possibility of potential shared pathophysiologic factors. Proposed links between asthma and mood disorders include a vulnerability (trait) and state connection. Vulnerability for both asthma and mood disorders may involve genetic and early developmental factors. State-related connections may include obstructive factors, inflammatory factors, sleep impairment, psychological reactions to chronic medical illness, as well as exacerbation of asthma in individuals with chronic stress. Treatment for asthma may also exacerbate mood disorders. New research suggests involvement of the central nervous system in asthma and allergy. Further characterization of clinical, psychological, cellular and molecular interconnections between asthma and mood disorders is needed to better evaluate and treat these patients. A close collaboration between mental health professionals and allergists could result in improved symptom control, quality of life, overall functioning and ultimately, decreased mortality.
PMCID: PMC2631932  PMID: 19180246
asthma; major depression; mood disorders; suicide; anxiety disorders; inflammation; sleep

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