September 9 2017 Fitness May Lower Breast Cancer Risk Janet Maker, Ph.D. News 0 In a new study, rats with low natural fitness were about four times as likely to develop breast cancer as those with high fitness. Source: Fitness May Lower Breast Cancer Risk Share this: Print (Opens in new window) Print Share on Facebook (Opens in new window) Facebook Share on LinkedIn (Opens in new window) LinkedIn Share on X (Opens in new window) X Share on Tumblr (Opens in new window) Tumblr