Greg Critser is an award-winning writer about medicine, science, food and health. His work has appeared in periodicals ranging from the New York Times to the Times of London, and from Harper's to the New Yorker. He is the author of the best seller Fat Land: How Americans Became the Fattest People in the World (Houghton Mifflin 2003), and the award-winning Generation Rx: How Prescription Drugs are Altering American Minds, Lives and Bodies (Houghton 2005). His new book, Eternity Soup: Inside the Quest to End Aging, will be published by Random House in January 2010. He has lectured widely at universities and medical schools, and his blog can be found at Scientificblogging.com.