Since the initial research in 2003, the five Blue Zones that have been identified are: Okinawa (Japan), Sardinia (Italy), Icaria (Greece), Loma Linda (California) and Nicoya (Costa Rica).

In Italy, he found Sardinia ... more than 100 years. The map was like a blotting paper and the ink used to spread ­— that is how he named these areas as Blue Zone. After that he found a ...