In 1995, Dr. Barry Sears, Ph.D., a former biotechnology
researcher for the Massachusetts Institute of Technology, authored
The Zone.
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Barry Sears was born in 1947.
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The diet zone was founded by Barry Sears , with a PHD in
biochemistry but no fitness background what so ever. The earliest
book he released about this was in 1995 so I am assuming he
discovered this theory sometime in the early 90's.