I've written in various posts that I believe you must have the asthma gene in order to have asthma. Yet based on recent articles and studies I've read, I'm now thinking it may be possible to get asthma (or something similar to it) even if you don't have the asthma gene.
Consider exercise induced asthma (EIA). Scientists now claim that EIA is no longer a proper diagnosis, as EIB is more like it, or exercise induced bronchospasm. They say this because some people who do not have asthma may have EIA, or more properly EIB.
As I note in this post, " The best definition I could find (about EIB) came from this post at AAAAI.org, which notes exercise doesn't necessarily "cause" asthma, but that "hyperventilation (fast breathing) associated with exercise cools and dries the upper and lower airway resulting in the release of histamine and other substances that produce the bronchospasm (spasming of the muscles in the air passages in your lungs)."
Later I wrote the following, "Actually, according to Dr. Christopher Randolph, a clinical professor at Yale University who was interviewed by The New York Time's, EIA is not quite the same as asthma. He notes the "'preferred term' in the scientific community for exercise-induced asthma is exercise-induced bronchoconstriction, or EIB."
The idea here is that even if you don't have the asthma gene, and you are constantly irritating your airway with fast, rapid breathing in cool, dry air, you may be damaging your lungs long term.
This is also evidence in an upcoming post I will release soon about Occupational Asthma. With occupational asthma, it is believed that if you are exposed to the same chemicals day in and day out, your body may develop a sensitivity to is even if you don't have the asthma gene. The end result in non-asthma gene occupational asthma.
Say you are born premature with an immature immune system. Many of these kids are predisposed to get asthma.
A virus called respiratory syncicial virus (RSV) is a bug that most children are exposed to. So, in the first three months of life many scientists believe your immune system is developing, and if you're exposed to the RSV bug, and this causes you to develop RSV pneumonia, this may cause lung damage that may make these kids at increased risk for developing asthma whether they have the asthma gene or not.
So, say you are born premature and you are exposed to RSV. Now you have an even greater risk of getting asthma, whether you have the gene or not.
Other studies have me leaning this way, such as studies that show you have an 80% chance of developing asthma if you are born by c-section as opposed to vaginal delivery. Or studies that show athletes have a 40% greater chance of getting asthma later in life as opposed to non athletes.
Or, as I noted in this post, "What I also found stunning was that this article from the New York Times noted half of all cross country skiers, and 17 percent of Olympic-level distance runners, have been diagnosed with EIA. Likewise, according to the American Academy of Allergy, Asthma and Immunology (AAAAI.org), 23 percent of all olympians have EIA."
So, since it's expected that only 10% of the population has the asthma gene, and 80% of those who are born by c-section get asthma, then you have to assume, or surmise, that many of that 80% do not have the asthma gene.
Or am I missing something. What do you think? Discuss.