The body-benefits of drinking coffee from one cup a day to six
How much coffee is too much? Four experts weigh in
How Many Cups Of Coffee Per Day Are Too Many? : The Salt : NPR
Is coffee good for you? Healthy number of coffees per day, according to science - Health
RACGP - How many cups of coffee a day is okay?
Coffee and Health; it's not just about the caffeine
Science Finds Exactly the Right Amount of Coffee You Should Drink a Day
The maximum cups of coffee you can have in a day
The bitter truth: 25 cups of coffee a day might not be healthy, Diet and Nutrition, Heart
Health Benefits of One Cup of Coffee a Day