Small diet changes may prolong life: study

MIAMI - It's hard to eat right all the time, but making small improvements by choosing healthier foods now and then may significantly boost one's chances of living longer, says a US study.

The report in the New England Journal of Medicine is the first to show that improving diet quality over at least a dozen years is associated with lower total and cardiovascular mortality.

Researchers at Harvard University tracked dietary changes in a population of nearly 74,000 health professionals who logged their eating habits every four years.