It's good for a pregnant woman to get lots of sunshine.
Saturday Nov 22, 2008 (foodconsumer.org) -- Your birthday
may decide your risk of asthma, according to a new study led by Dr. Tina
Hartert, director of the Center for Asthma Research and Environmental Health at
Vanderbilt University School of Medicine in Nashville, Tenn..
The study in the Dec 2008 issue of the American
Journal of Respiratory and Critical Care Medicine found babies born in autumn,
4 months before the peak of winter virus season, were 30 percent more likely to
The researchers speculated that winter viruses like
respiratory syncytial virus or RSV may be the culprit for the elevated risk of
asthma and suggested that preventing these viruses could prevent asthma.
Indeed, many viruses particularly rhinovirus have already been linked to asthma including its inception, exacerbation and possibly severity, according to a study published in the Oct 2008 issue of the Journal of Allergy and Clinical Immunology.
For the current study, Hartert and team followed up more than
95,000 infants born between 1995 and 2000 under the Tennessee Medicaid program
from birth through early childhood to examine whether the timing of birth and seasonality
of winter virus was associated with the development of asthma.
They found that babies born in the fall or autumn, which
is about four months before the peak of the winter virus season, had a 29
percent increased risk of asthma.
The speculation as to what causes the elevated risk of
asthma is not new.
A study led by Jackson DJ and colleagues from the University
of Wisconsin-Madison and published in the Oct 2008 issue of American Journal of
Respiratory and Critical Care Medicine has already shown that RSV was strongly
associated with asthma symptoms like wheezing.
Kackson et al. found "from birth to age 3 years,
wheezing with respiratory syncytial virus (RSV) (odds ratio [OR], 2.6),
rhinovirus (RV) (OR, 9.8), or both RV and RSV (OR , 10) was associated with
increased asthma risk at age 6 years.
Hartert was cited as saying that parents should practice
good hygiene and take infection-control measures such as washing their hands
frequently to prevent viral infections and the development of asthma in their
babies. But a health observer suggests that other measures can be taken to prevent the viruses.
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