Dr. George Guthrie received his MD degree from Loma Linda University in 1981, and later completed a Masters of Public Health and joined the Loma Linda University faculty for a while.

A return to clinical practice took Dr Guthrie to the foothills of the California Sierra Nevada Mountains where he continued to apply his community lifestyle medicine focus from a traditional allopathic medical clinic. He and his wife, Dena, successfully piloted and ran annual seven, week-long, community based programs designed to lower the risk of heart disease using lifestyle principles.

Dr Guthrie has sought to maintain excellence in nutritional knowledge and its application to the treatment of disease. This led him to obtain and maintain certification from the Certification Board of Nutrition Specialists (CBNS) and as a Certified Diabetic Educator (CDE). He worked at Lifestyle Center of America from 2002-2007, where he had to identify and motivate those who were willing to make lifestyle changes to treat lifestyle diseases such as Type 2 Diabetes, Hypertension, and Coronary Heart Disease.

In 2007, Dr. Guthrie joined the Florida Hospital Family Practice residency where he focuses on guiding residents in community and lifestyle medicine.

In the last few years Dr Guthrie has had the privilege of being involved in the development several lifestyle change programs including the Coronary Health Improvement Project (CHIP), The Wellspring Diabetes Program, and the CREATION Health program.