Prevention
While there is no certain way to prevent
asthma, you can take steps to reduce your child's
airway
inflammation
and the likelihood of
asthma attacks.
No one is sure if breast-feeding affects a child's risk of getting
asthma. Some studies show that breast-feeding protects a child from getting
asthma.10, 11 Other studies show
that breast-feeding, especially when mothers with asthma breast-feed, may
actually increase a child's risk of getting asthma.12 A
large study following children until 14 years of age found that breast-feeding
had no effect on the development of asthma.13 Mothers
are still encouraged to breast-feed their children for all the other proven
health benefits that come from breast-feeding.
Preventing asthma attacks
The main focus of prevention is on reducing the number, length,
and severity of asthma attacks. The best way to prevent asthma attacks in your
child is to follow your doctor's recommendations and make sure your child takes
asthma control medications as directed. By doing this, it is possible, in most
cases, to prevent asthma attacks. Also, by avoiding
triggers, your child may be able to prevent or reduce
the severity of symptoms. For more information on identifying your child's
triggers, see:
Identifying asthma triggers.
Below is a list of specific triggers. If you know that any of
these triggers cause your child's symptoms to become worse, you should avoid or
limit your child's exposure to them.
Upper respiratory infections
Upper respiratory infections, including the common
cold, cause 85% of asthma attacks in young children.21
Basic preventive measures include the following:
- Avoid contact with other people who are ill.
If there is an ill child in the home, separate him or her from other children,
if possible. Put the child in a room alone to sleep.
- If you have a
respiratory infection, such as a cold or the flu, or if you are caring for
someone with a respiratory infection, wash your hands before caring for your
child. Handwashing eliminates the germs on your hands and the spread of germs
to your child when you touch your child or touch an object he or she might
touch.
- Do not smoke. Second-hand smoke irritates the mucous
membranes in your child's nose, sinuses, and lungs and increases his or her
risk for respiratory infections.
- Children with asthma and their
family members should have a flu shot (influenza vaccine) every year.
Irritants in the air
Common irritants in the air, such as tobacco smoke and air
pollution, can trigger asthma symptoms in some children.
Controlling tobacco smoke is important because it is a major
cause of asthma symptoms in children and adults. If your child has 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 for wheezing in their newborn
babies.
- Exposure of young children to second-hand tobacco smoke
increases the likelihood that the children will develop asthma and increases
the severity of symptoms if they already have the disease.
Consider keeping your child 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. Avoiding these
may decrease asthma symptoms.
Allergens
Your child may be allergic to certain substances (allergens). You may decrease your child's asthma
symptoms by limiting exposure to those substances.
To help reduce your child's exposure to allergens:
- Control cockroaches, especially if you
and your child live in an inner-city area.
- Control dust mites.
House dust mites have been linked with the development of asthma in
children.1
- Control animal dander and
pet allergens. If your pet is a known trigger for your child, you may
need to think about giving your pet away. If that is too hard, taking steps
such as keeping your pet out of your child's bedroom and dusting and vacuuming
often may help your child's asthma.
- Control indoor
mould, 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.
- Control your child's exposure to
pollens in the air. Watch local weather reports or
read the local newspaper for pollen counts in your area.
- Limit your
child's exercise outdoors in cold weather. The air may irritate airways. Have
your child wear a scarf around his or her face and breathe through the
nose.
- Have your child avoid foods that may cause asthma symptoms.
Some children have symptoms after eating processed potatoes, shrimp, or dried
fruit. These foods and liquids contain sulfites, which may cause asthma
symptoms.
- Consider using acetaminophen (such as Tylenol) for pain
relief instead of similar medications such as ibuprofen if they increase asthma
symptoms. (Do not give ASA to anyone younger than 20
because of the risk of
Reye's syndrome.)
Some research indicates that children who have older siblings or
who attend daycare may receive some protection from developing asthma.22 One theory as to the increasing prevalence of asthma suggests
that low exposure to some bacteria and infections may prevent children's
immune systems from forming the cells necessary to
protect against asthma.