You'll recognize the name from your morning flakes: Dr. John Kellogg was a 19th and 20th century doctor, nutritionist, and author. He got some things right. He got more things way, WAY wrong. Kellogg was obsessed with bodily health, good gut flora, and keeping your hands off your genitals. Or other people's genitals. This week we look into the contributions of John Kellogg, including the cereal that bears his name.