One man's recipe for the Fountain of Youth

Dr. Sanjay Gupta travels the globe and brings back the recipe for living longer and living better.

On the Nicoya Peninsula in Costa Rica, families are close, hard work is the norm and there's no such thing as retirement.

Evincio is 80-year-old, but still wakes up every day at 4:30 a.m. to work on this ranch. He might be 80 but he's got the vigor of someone who is 40.

Dan Buettner and his research team have found that Evincio and other men here 60 and older are four times as likely to reach 100 than their counterparts in the United States or Europe.

Buettner travels to longevity hot spots around the globe . He calls them blue zones, because most of longevity is dictated by our lifestyle as opposed to our genes. Buettner believes that by going to these blue zones and methodically looking at what these people do, he and his team could distill out a defacto formula for longevity.

Costa Ricans on the Nicoya Peninsula eat a healthy diet, plenty of vegetables and fruits like papaya and citrus fruits. The tortillas they eat are made using a special process that takes the husk off the corn and puts more calcium into them -helping to keep bones strong in old age.

Buettner's team has also studied why people live so long in Sardinia, Italy; Okinawa, Japan and Loma Linda, California. Buettner said the blue zones offer a recipe for healthy living that could add eight good years to your life.

He offers this advice: Eat a plant-based diet, mostly plants. Number two, do regular low-intensity exercise, and then number three invest in family and friends. Buettner hopes the blue zones will ultimately teach people how to extend their golden years.

You can learn more about Dr. Sanjay Gupta's findings in his book "Chasing Life - The Search for Immortality to Help You Age Less Today."