The role exercise plays in disease prevention has been studied for decades, but new research surrounding physical fitness and breast cancer risk saw particularly interesting results. According to a study conducted out of Colorado State University, Memorial Sloan Kettering Cancer Center in New York, and the University of Michigan, female rats with low levels of physical fitness are four times more likely to develop breast cancer when exposed to a known breast cancer trigger than those who were physically fit.
Here's something to keep in mind, though, other than the fact that rats are not humans: Researchers were specifically testing for genetic physical fitness or how fit these rats were naturally regardless of how much they exercised. So if physical fitness is mostly genetic, is there a point in exercising more in the name of breast cancer prevention? Here's what the experts have to say.