This week we start a series looking at what products in our food that are usually labeled "artificial", "additive", or "synthetic". We're starting off looking at something that you can find in almost every restaurant, coffee shop, and in most of your cupboards- artificial sweeteners. We talked to Dr. Richard Mattes, a scientist in the Department of Nutrition Science at Purdue University to find out why we use these sweeteners, what they do to our body, and are they hurting us?