Vignette #1 You and your friend Karen are having lunch out a…

Vignette #1 You and your friend Karen are having lunch out and you order an iced tea. Karen sees you reach for the pink packet of Sweet ’N Low, stops your hand, and says, “Don’t you know that stuff is bad for you? I read that it causes cancer, and I also know people who say that Equal, another nonnutritive sweetener, gives them headaches.” As your conversation continues, let’s show Karen how well informed you are concerning nonnutritive sweeteners by answering the following questions: Although some studies in the past may have found that saccharin can cause bladder cancer in lab rats, why would it be considered safe today to continue using it?

Vignette #2 Sam has been overweight since the eighth grade a…

Vignette #2 Sam has been overweight since the eighth grade and is diagnosed with type 2 diabetes at his annual checkup. He tells his fiancée, Anna, who is now determined to learn as much as possible about this illness. Sam and Anna have found several reputable sites on the Internet in an attempt to help Sam reverse his condition. Let’s ask several questions to see how much they have learned. What problem is most responsible for Sam’s type 2 diabetes?