Earlier studies have shown that children born in autumn or winter than in the eczema, and wheeze than children born in spring or summer are likely to asthma, the researchers noted.
The new discovery could be many reasons, chief researcher at the University of Oulu Institute of Health Sciences, including the concentration of pollen in spring, sun exposure, which is related to the synthesis of vitamin D. Dr how Pyrhonen said and viral infections.
"These interpretations are possible, but our study design because the role of the above factors did not allow any assessment" Pyrhonen said.
Pyrhonen preliminary study said the findings are specific to families should not plan around the time of conception. "Because our study was an observational study, we can not give any recommendations to the families" Pyrhonen said.
Report October 20 Journal of Epidemiology and Community Health is published in the online version.
Study, Pyrhonen Team 5920 Finnish children born between 2001 and 2006 to collect data. From birth to four years, 961 of these children were tested for food allergies.
By the age of 4, a food birth season, to 9.5 percent in June and July for those born in October and November for children born from 5 percent according to the odds of getting various allergies, the researchers found.
In fact, children whose growth was the 11th week during April or May had food allergies, 11 percent of children who reached that level in December or in January, the 6 percent growth compared with that found Pyrhonen group.
Specific allergies, a child whose first embryo development finished in April or May was three and three months is likely to be allergic to milk and that the level reached in November or December, compared with eggs often, researchers that in the context.
Commenting on the study, Dr. Erick Forno, an assistant professor of pediatrics at the University of Miami Miller School of Medicine, said there could be a variety of reasons for this finding.
“But what is important is that we are understanding more that there are environmental factors that at some point during pregnancy play an important role in developing the immune system that predisposes the kid to have either food allergies or environmental allergies or asthma or eczema or something of that sort,” he said.
Forno cautioned that this was an observational study (a type of study in which people are observed or certain outcomes are measured and no effort is made to affect the outcome — for instance, no treatment is given). “So there may be other things that these researchers didn’t measure that are also associated. What they are looking at is the common consequence. So we can’t say it’s a causal association,” he said.
Parents need to realize that things outside the uterus are very important in the developing fetus, Forno said, adding, “We are only beginning to understand what goes on.”
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