Dr. Ian Smith talks about nutrition topics, new book 'The Clean 20'

Dr. Ian Smith, a nutrition/diet expert who is a New York Times best-selling author, gave the lowdown about some of the latest nutrition headlines.

He also talked about his latest book, "The Clean 20." The 20 "clean" foods that can give you a total body transformation in just 20 days

For more information, visit: http://www.doctoriansmith.com/