Scientists discuss in 'Insulin-mediated acceleration of breast cancer development and progression in a nonobese model of type 2 diabetes' new findings in breast cancer. According to recent research from the United States, "Epidemiologic studies suggest that type 2 diabetes (T2D) increases breast cancer risk and mortality, but there is limited experimental evidence supporting this association. Moreover, there has not been any definition of a pathophysiological pathway that diabetes may use to promote tumorigenesis."