Immune stimulation by rhinovirus infections may contribute to the development of asthma.

Human rhinoviruses, allergy, and asthma: a clinical approach.
Medicina (Kaunas). 2009;45(11):839-47.

The Breathe Easier through Weight Loss Lifestyle (BE WELL) Intervention: A randomized controlled trial.

This is an asthma prevention study from University of Copenhagen, Copenhagen University Hospital in Denmark. This study evaluated the development of eczema and wheezy disorders during the first 2 years of life . The researchers based their finding on 411 infants from the Copenhagen Study on Asthma in Childhood (COPSAC) birth cohort who were born to mothers with a history of asthma.

Terms used in this study: polyunsaturated fatty acids, wheezy exacerbation.

The authors conclude that risk of wheezy disorder and severe wheezy exacerbations was reduced with breast feeding. The risk of eczema increased in this cohort of infants.

Increased risk of eczema but reduced risk of early wheezy disorder from exclusive breast-feeding in high-risk infants. — J Allergy Clin Immunol. 2010 Mar 15

From Animal Planet:

Two brothers in Hyderabad, India share their unusual cure for asthma with thousands of people every year.

Click here to view the embedded video.

Olive oil during pregnancy is associated with reduced wheezing during the first year of life of the offspring.

Currently, there isn’t a way to prevent asthma from starting in the first place. However, you can take steps to control the disease and prevent its symptoms.

What does recent research have to say about the prevention of asthma?

The exact cause of asthma isn’t known. Researchers think a combination of factors (family genes and certain environmental exposures) interact to cause asthma to develop, most often early in life. These factors include:

* An inherited tendency to develop allergies, called atopy (AT-o-pe)
* Parents who have asthma
* Certain respiratory infections during childhood
* Contact with some airborne allergens or exposure to some viral infections in infancy or in early childhood when the immune system is developing

If asthma or atopy runs in your family, exposure to airborne allergens (for example, house dust mites, cockroaches, and possibly cat or dog dander) and irritants (for example, tobacco smoke) may make your airways more reactive to substances in the air you breathe.

Different factors may be more likely to cause asthma in some people than in others. Researchers continue to explore what causes asthma.

The “Hygiene Hypothesis”

One theory researchers have for what causes asthma is the “hygiene hypothesis.” They believe that our Western lifestyle—with its emphasis on hygiene and sanitation—has resulted in changes in our living conditions and an overall decline in infections in early childhood.

Many young children no longer experience the same types of environmental exposures and infections as children did in the past. This affects the way that the immune systems in today’s young children develop during very early childhood, and it may increase their risk for atopy and asthma. This is especially true for children who have close family members with one or both of these conditions.

source NHLBI website.