Prevention
Although there is no certain way to
prevent
asthma, you can take steps to reduce
airway
inflammation
and the likelihood of
asthma attacks.
Preventing asthma attacks
The main focus of
prevention is to reduce the number, length, and severity of asthma attacks. By
avoiding
triggers, you may be able to prevent or reduce the
severity of symptoms. For more information on identifying your triggers,
see:
Asthma: Identifying your
triggers.
If you can predict or often have asthma attacks when you
exercise, use your inhaler 10 minutes before you start the activity so you can
avoid an attack.
The following is information about specific
triggers. If you know that any of these cause your symptoms to become worse,
you should avoid or limit your exposure to them.
Irritants in the air
Common irritants in the air,
such as tobacco smoke and air pollution, can trigger asthma attacks in some
people.
Controlling tobacco smoke is important because it is a
major cause of asthma symptoms in children and adults. If you have asthma, try
to avoid being around others who are smoking, and ask people not to smoke in
your house.
- Pregnant women who smoke cigarettes during
pregnancy increase the risk of
wheezing in their newborn babies.
- Exposing
young children to secondhand tobacco smoke increases the likelihood that they
will develop asthma and increases the severity of symptoms if they already have
the disease.
Consider staying inside when air pollution levels are
high. Other irritants in the air (such as fumes from gas, oil, or kerosene or
wood-burning stoves) can sometimes irritate the bronchial tubes, which carry
air to the lungs. Avoiding these may decrease your asthma symptoms.
Allergens
If you are allergic to certain
substances (allergens), you may decrease your asthma symptoms by
limiting exposure to these substances.
To help reduce your
exposure to allergens:
- Control cockroaches, especially if you
live in an inner-city area or the southern part of the United
States.
- Control dust mites. House dust mites have been linked
with the development of asthma in children.1
- Control animal dander and pet
allergens. If you know your pet is a trigger, you may need to think
about giving it away. If that is too hard, taking steps such as keeping your
pet out of your bedroom and dusting and vacuuming often may help your
asthma.
- Control indoor mold, especially if you live in an area
with high humidity.
It also may be necessary to avoid exposure to other types
of triggers that cause asthma symptoms.
- Get a flu shot (influenza vaccine) every
year. Have your family members get one too.
- Control your exposure
to pollens in the air. Check your local weather report or
newspaper for pollen counts in your area.
- Avoid exercising outdoors
in cold weather. The air may irritate your airways. If you are outdoors in cold
weather, wear a scarf around your face and breathe through your
nose.
- Avoid foods that may cause asthma symptoms. Some people have
symptoms after eating processed potatoes, shrimp, nuts, and dried fruit, or
after drinking beer or wine. These foods and liquids contain sulfites, which
may cause asthma symptoms.
- Avoid taking aspirin, ibuprofen, or
other similar medications if they increase asthma symptoms. Consider using
acetaminophen (Tylenol) instead. (Do not give aspirin to anyone
younger than 20 because of the risk of
Reye's syndrome.)