Question: what are the good and bad effects of coffee?
Answer: Coffee Contains Some Essential Nutrients and Is Extremely High in Antioxidants. ... 
Coffee Contains Caffeine, a Stimulant That Can Enhance Brain Function and Boost Metabolism. ... 
Coffee May Protect Your Brain From Alzheimer's and Parkinson's. ... 
Coffee Drinkers Have a Much Lower Risk of Type 2 Diabetes.