Causes Of Asthma
CAUSES OF ASTHMA
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Causes Of Asthma
Doctors still don't know what causes some people to develop asthma. They think that many different genetic and environmental factors play a role.
Researchers are working hard to identify the responsible genes. They have also made progress in identifying other factors that seem to either lead to the development of asthma - or possibly protect you against developing asthma.
One of the most important causes of asthma is atopy. This is the inherited tendency to be allergic. If others in your family have allergies, you may have inherited a tendency to be allergic, and your chances of developing asthma are greater than average.
Researchers are also beginning to see that exposure to certain irritants when you are very young may play a role in the development of asthma.
If you have a family history of asthma or allergies and your mother was exposed to certain irritants, such as tobacco smoke, when she was pregnant with you, you may be more likely to develop asthma.
Exposure to certain indoor allergens in early childhood may also play an important role in the development of asthma.
In many places, exposure to house dust mites appears to have this effect. Other indoor allergens included amongst the causes of asthma are cat dander, cockroach droppings, and mold.
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Occupational Asthma
Exposure to irritants, certain chemicals, or substances in your workplace may increase your chances of developing occupational asthma.
Changes in the way we live and work today may also increase our exposure to these allergens and irritants.
For example, we now spend far more time indoors than we used to, and we have reduced ventillation in our homes and workplaces to conserve energy. This may trap allergens and irritants inside, thereby increasing the causes of asthma.
Asthma and Obesity
Researchers have also found a link between asthma and obesity. Some think that beibg obese may increase your chances of developing asthma, while others argue that people with asthma may not be active enough, and, as a result, they become overweight. This is an issue that is now beibg studied.
Protection Against Asthma Development
On the other side of the coin, medical research has identified factors that seem to help protect us against developing asthma.
For example, they think that children who are exposed to certain types of infections and environments during their first year or two of life may be less likely to develop asthma.
As an example, research has shown that many children who grow up on or near farms and are exposed to livestock and poultry, are less likely to develop asthma and allergies.
The same appears to be true of children who have two or more older siblings or attend daycare during their first six months.
This discovery has lead to the theory that our western lifestyle - with its emphasis on hygiene and sanitation - has resulted in changes in our living conditions and an overall decline in infection in early childhood.
Many young children no longer experience the same types of environmental exposures and infections that they did in years past.
This affects the way their immune systems develop during very early childhood and may actually be amongst the causes of asthma, by increasing their chances of developing atopy and asthma.
This theory is called the "Hygiene Hypothesis." It may help explain why asthma has been on the increase in recent years.
(Which is the best
air purifier for you?
Video clip shows comparative study of different brands.
Make an informed choice.
Click here: Air Purifiers)
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