(IMAGE) Kumamoto University Caption By measuring the concentrations of 24 phenols—including nitrophenol, parabens, bisphenol, octylphenol, and nonylphenol—in urine samples collected during the first trimester of pregnancy, and performing logistic regression analysis, researchers identified that high exposure to butylparaben and low exposure to 4-nonylphenol are risk factors for asthma development in children. These findings offer valuable insights for developing recommendations on prenatal phenol exposure. Credit Shohei Kuraoka, Masako Oda,Kumamoto University Usage Restrictions Only to be used in content reporting on this research. Credit must be given to the creator. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.