4 cups per day

Excerpted from The Wall Street Journal on Wednesday (10/29/2014), consumes 14,000 milligrams of caffeine which is equivalent to 8 cups of coffee a day is too much. In fact, taking as many as six cups of coffee a day are at increased risk of death under the age of 55 years. Coffee Eat no more than 4 cups a day. According to Dr. Johnson, Professor of Johns Hopkins University, consume 2-4 cups of coffee a day can lower levels of depression. "If you drink up to four cups of coffee a day and no side effects, the dosage is right for you," said Dr. Johnson.