 This is Liz Frenzel with Crawford Media Group in Denver, and today our guest is Dr. Don Colbert. Dr. Colbert has been a board-certified family practice doctor for over 25 years and is also board-certified in anti-aging medicine and author of several New York Times best-selling books. Today we'll be talking about his new book called Health Zone Essentials. Welcome to our program, Dr. Colbert. Well, thank you. It's great being here. Dr. Colbert, tell us about your new book.