Women who eat apples while they are pregnant may be helping to prevent asthma and wheezing in their children, suggests a new study. The study, published in Thorax, examined 1,200 mothers and their children and found that the children of women who consumed apples regularly while they were pregnant (more than four per week) had about half the risk of having childhood asthma and a 27% lower risk of wheezing as children of mothers who ate  0-1 apples per week. Researches say that flavonoids, which are known for their antioxidant activity, and other compounds found in apples may be the cause of their protective effect.