For two decades, Dan Buettner has studied longevity in places like Ikaria, Greece and Okinawa, Japan.
While identifying the world's "Blue Zones," the five areas with the longest-living people, the researcher has studied what factors lead to prolonged lifespans.
"The average 20-year-old female could live about 10 extra years if they ate a Blue Zone type diet," Buettner says, referring to a whole-food, plant-based diet.
Men, he found, could live an extra 13 years if they eat like Blue Zone residents.
Buettner says there is one key thing people in their 20s can do right now to boost their longevity.
Persons:
Dan Buettner, Buettner
Locations:
Ikaria, Greece, Okinawa, Japan