To get an extra 14 years of life, don't smoke, eat lots of fruits and vegetables, exercise regularly and drink alcohol in moderation. That's the finding of a study that tracked about 20,000 people in the United Kingdom.

Kay-Tee Khaw of the University of Cambridge and colleagues calculated that people who adopted these four healthy habits lived an average of 14 years longer than those who didn't.

The benefits were also seen regardless of whether or not people were fat and what social class they came from.

"We didn't ask these people to do anything exceptional," Khaw said. "We measured normal behaviors that were entirely feasible within people's normal, everyday lives."