Via \., read
the transcript of this ABC radio show and see what you think.
In a nutshell, Lestig claims (with experimental evidence) that insulin causes obesity, and reducing a person's insulin levels fixes the problem by making them eat less and, feel better, and want to exercise. He also speaks about how fructose is a big part of the problem.
Dr Robert Lustig is Professor of Pediatric Endocrinology at the University of California, San Francisco.