**Coffee: Dangers, Warnings, Side-Effects?** Black coffee, decaf , espresso , roasted drink has built its reputation on its stimulating effect . But his actions on the body are much larger ! Faced with migraine, gallstones or Parkinson's disease , precious coffee beans reveal their many virtues . Dip into the cup. ... and rectal cancer because as it inhibits the secretion of bile acids. 10. The people who drink coffee daily are 25 % less likely to suffer heart enfermeades .