After all that has been said above, if the thought of dieting, or, having your genes mucked with, doesn't sound appealing to you do not worry. Here is another and perhaps a more pleasurable way to live longer, researchers say: “FALL IN LOVE”. A study earlier this year led by Linda Waite, a sociologist at the University of Chicago, showed that happily married couples tend to live longer than unwed individuals. Married men were found to live, on average, ten years longer than non-married men, and married women lived about four years longer than non-married women.