(April 3, 2011 - Insidermedicine) From Maryland - Risk of second cancer following radiotherapy does not outweigh the benefits of treatment, according to a report published in the Lancet Oncology. Researchers reviewed data on nearly 650,000 adult cancer survivors, finding that only 8% of patients developed a second cancer as a result of radiation therapy.  From the UK - Longer breast-feeding may be associated with more brain growth in babies, according to a report published in the Proceedings of the National Academy of Sciences. Studying nearly 130 mammal species, researchers found that the longer the pregnancy and the longer the breast-feeding period, the bigger the babies brain would grow.  And finally, from New Zealand - Acetaminophen during pregnancy may raise risk of asthma in the child, according to a report published in Clinical and Experimental Allergy. Results of a meta-analysis covering 6 studies found that any prenatal exposure to acetaminophen was linked to increased risk of the children developing wheeze between the ages of 1 and 7.