>> thanks for watching, everyone. thanks >> announcer: the following is a paid advertisement for green tea cr, brought to you by purity products. >> hello, and welcome to "health line." i'm your host, mark larson. we're sponsored by the fine folks at purity products. one of my favorite guests is on the program with us today. we're gonna get to him in just a moment. talking about chris kilham, known as the medicine hunter. cnn calls chris the indiana jones of natural