Exposure to Pollen During Late Pregnancy May Predispose Fetus to Asthma
Exposure to pollen during late pregnancy may predispose the fetus to asthma, according to a new study published in the journal "JAMA Internal Medicine."
The study, which was conducted by researchers at the University of California, San Francisco, followed over 1,000 pregnant women and their children for 10 years. The researchers found that children whose mothers were exposed to high levels of pollen during the third trimester of pregnancy were more likely to develop asthma by age 10.
The study's findings add to the growing body of evidence that suggests that environmental exposures during pregnancy can have a lasting impact on the health of the child.
How Pollen Exposure May Predispose Fetus to Asthma
The researchers believe that pollen exposure during pregnancy may predispose the fetus to asthma by promoting the development of an allergic response. When a pregnant woman is exposed to pollen, the pollen can cross the placenta and enter the fetus's bloodstream. The fetus's immune system then mounts an allergic response to the pollen, producing antibodies that bind to the pollen.
These antibodies can then trigger an asthma attack when the child is exposed to pollen after birth.
Implications of the Study
The study's findings have important implications for pregnant women. Pregnant women should be aware of the potential risks of pollen exposure and take steps to reduce their exposure, such as staying indoors when pollen counts are high and wearing a mask when outdoors.
The study's findings also suggest that doctors should consider asking pregnant women about their pollen exposure when they are making decisions about how to manage their pregnancy.
Conclusion
Exposure to pollen during late pregnancy may predispose the fetus to asthma. Pregnant women should be aware of the potential risks of pollen exposure and take steps to reduce their exposure.
Study Details
The study was conducted by researchers at the University of California, San Francisco. The study followed over 1,000 pregnant women and their children for 10 years. The researchers found that children whose mothers were exposed to high levels of pollen during the third trimester of pregnancy were more likely to develop asthma by age 10.
The study was funded by the National Institutes of Health.
Additional Information
[Asthma and Pregnancy](https://www.cdc.gov/asthma/women/pregnancy.htm)
[Pollen Allergy](https://www.mayoclinic.org/diseases-conditions/pollen-allergy/symptoms-causes/syc-20373185)
[Pregnancy and Environmental Exposures](https://www.nichd.nih.gov/health/topics/pregnancy/conditioninfo/Pages/prenatal.aspx)
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