Want to live 15 years longer? New research suggests that eating a Mediterranean diet along with regular exercise, not smoking, and maintaining a healthy weight could add 15 years to a woman's life, or 8.5 years to a man's.

A new study published last week in the American Journal of Clinical Nutrition found that these four healthy lifestyle factors significantly cut the risk of premature death, especially in women. Research from Maastricht University in the Netherlands used data on diet and lifestyle habits of 120,852 men and women aged 55 to 69.