A study published in the American Journal of Clinical Nutrition found that multiple cups of coffee affects women’s estrogen levels, which could put them at a higher risk of hormone-related diseases like breast cancer.  While the study is inconclusive, it is food for thought for women who consume moderate levels of caffeine daily.  Read more in this article from Prevention: http://www.prevention.com/health/healthy-living/drinking-coffee-could-affect-estrogen-levels-study