Breast cancer is on the rise in women under 50. It could be linked to 2 lifestyle factors. Business InsiderBreast Cancer Continues to Rise Among Younger Women, Study Finds The New York TimesBreast cancer diagnoses ticking up among young women, Asian Americans: Research The HillBreast cancer deaths in the US continue to fall, but new report warns of rise in cases among women younger than 50 CNNBreast cancer rising among younger women: new report New York Post