Dr. David Warner of the Mayo Clinic says children exposed to two or more anesthetics before age three had more than twice the incidence of ADHD than kids who had no exposure.
The rate was 7.3-percent among children with no exposure to anesthesia and surgery.
The figure jumped to nearly 18-percent for children who had two or more exposures to anesthesia and surgery.
However, Warner says the results of the study don't definitively mean that anesthesia causes ADHD.
He says a wide range of other factors may come into play and further investigation is warranted.
The findings are published in "Mayo Clinic Proceedings."
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