I felt it necessary to moderate the last post on caffeine and coffee where a study suggested drinking more than 4 cups of coffee a day is beneficial. Anyway, women in particular, should be careful of drinking more than 4 cups of coffee or caffeinated drinks a day as there could be a possible link to breast cancer, but it is not very clear from the studies. Read more about it here: Caffeine-Breast Cancer Link Refuted Although, it says it is refuted, upon reading the material, I realized there are women at greater risk (those with benign breast disease) and really it doesn't sound too clear cut to me one way or the other. Moderation is probably key, as with many things in life.