Advanced Level Class (1.5 hr): Dr. Marz briefly discusses evaluation of a person's blood glucose and insulin levels. He then discusses the various sugar substitutes that have appeared on the market and compares them to Stevia rebaudina. Stevia has been used in South America for centuries as a sweetener. Stevia literature is discussed including toxicity and pharmacological effects Other plant materials will also be discussed including guar gum, fenugreek and pectin.