According to research published in the Annals of Internal Medicine, people who drink a moderate amount of coffee (up to 3½ cups a day) may be more likely to have a longer shelf life, even if their coffee is slightly sweetened with sugar.
For about seven years, the researchers tracked the coffee consumption and health of 171,616 participants, who were on average nearly 56 years old and were free of cancer and cardiovascular disease when the study began. They found that those who regularly drank between 1½ and 3½ cups of coffee a day, either plain or sweetened with about a teaspoon of sugar, were up to 30 percent less likely to die in that time period from any cause, including cancer and cardiovascular disease. than those who did not drink coffee.