Exposure of bisphenol A (BPA), an estrogen mimic formed by condensation of phenol and acetone found in several consumer products,  in the womb increases the risk of asthma among school-age girls. According to a recent research conducted by Dr Alicia Abellán, a researcher at Barcelona Institute for Global Health and team, observed that the effect could be due to bisphenols crossing the placental barrier and interfering with the child’s respiratory and immune systems during the developmental phase. The findings of the study, published in the journal Environment International, revealed that although there was a  significant association between levels of BPA in mothers’ urine and asthma and wheezing for girls, the same was not true for boys.