Asthma risk higher in babies whose mothers are exposed to pollen
Monday, September 17, 2018 IST
A new study says that babies born to mothers who were exposed to pollen during the last trimester may be at increased risk of developing respiratory diseases such as asthma.
Babies born to mothers who were exposed to pollen during the last trimester may be at increased risk of developing respiratory diseases such as asthma, says a study. The findings showed that those born during the peak grass pollen season had high immunoglobulin E (IgE) levels in umbilical cord blood — a marker used to predict the development of allergic diseases.
“We know that outdoor pollen exposure during the first couple of months after birth can lead to allergic respiratory diseases and we suspected that exposure during the later stages of pregnancy may also be important,” said lead researcher Bircan Erbas, Associate Professor from La Trobe University in Melbourne, Australia. “Many studies have shown that babies with high levels of IgE in cord blood can go on to develop allergies later in childhood, but little is known about how these levels are affected by exposure to pollen in utero.”
However, the study published in Environment International, also showed that being pregnant for an entire grass pollen season may have a protective effect on babies. “We found these babies had lower IgE levels. This was a significant finding and indicates the possible development of a sensitisation barrier,” Erbas said.
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