David Kessler: Effective Dieting and Portion Controlbr Commonwealth Club - The Commonwealth Club of Californiabr Drawing on years of extensive research and interviews with medical experts and industry insiders, former FDA commissioner David. A Kessler tears the brightly colored packaging off the food business to reveal the startling cultural, biological and psychological influences that have produced a nation of people hardwired to overeat.The more hooked on these foods we become, the more of them we will buy.