But people tend to overlook the truly incredible things that coffee does for us. According to the Journal of Alzheimer’s Disease, drinking at least three cups of coffee a day could stave off Alzheimer’s disease. 7 Coffee And Your HeartPeople have long considered coffee to be bad for the heart, but recent studies have debunked these misconceptions. Some of the cancers from which coffee helps to safeguard you include oral, uterine, prostate, and brain cancers—and this is only a handful of them. Read more fun facts about coffee and tea on 10 Awesome Facts About Coffee and 10 Absorbing Facts About Tea.