News background: The 2011 Annual Congress of the European Respiratory Society (ERS) was held in Amsterdam, the Netherlands, from September 24th to 28th. The research team of Professor Ekaterina Maslova from the Harvard School of Public Health published the results of a study of 70,000 pregnant women and found that mothers who drank low-fat yogurt during pregnancy increased the risk of postpartum asthma in their children. Glossary: Low-fat milk is raw milk that has been defatted to reduce fat.