Stephan J. Guyenet, PhD, is an obesity researcher, writer, and science consultant. He is the author of The Hungry Brain: Outsmarting the Instincts that Make Us Overeat, which will be available February 7. He blogs at Whole Health Source.

Stephan J. Guyenet, PhD, is an obesity researcher, writer, and science consultant. He is the author of The Hungry Brain: Outsmarting the Instincts that Make Us Overeat, which will be available February 7. He blogs at Whole Health Source.