Washington: As a first born, you are more likely to suffer from particular allergies than your younger siblings, a new research says."It has been established that individuals with increased birth order have a smaller risk of allergy," said Takashi Kusunoki, a paediatrician at the Shiga Medical Centre for Children and Kyoto University, Japan, who led the study.
For example, the prevalence of food allergy was four percent in first born children, 3.5 percent in second born and 2.6 percent for children born later.The same effect was also observed when looking specifically at the presence of food allergy in the children during infancy.The incidence of food allergy decreased significantly as birth order increased, leading the researchers to suggest that this birth order effect may have a prenatal origin.IANS
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