Researchers have shed light on the dieting habits of 'Blue Zone' residents in a bid to help people live past 100 years old. Okinawa, Japan, is among six of the world's extraordinary regions where locals are reportedly 10 times more likely to live to 100 than 'average' Americans. While calories restriction, lots of family time and even gardening are among the go-to habits they vouch for, there's a particular food item that's received special attention. You may be surprised to hear that such a '