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An ancient New Guinea myth says the human race originated from the first man making love to a stalk of sugar cane. But in modern times, our love affair with sugar has created a health crisis. The average American consumes nearly 23 teaspoons of sugar a day, three to four times the American Heart Association’s recommended daily limit. Obesity, diabetes, high blood pressure and heart disease have all been linked to excessive consumption. Diane and her guests discuss the history of sugar, why we crave it, how our bodies evolved to process it and why it could be making us sick.
All images from the August 2013 issue of National Geographic magazine © Robert Clark/National Geographic. See more photos of sugar in its many forms.
In her first live radio interview ever, Pulitzer Prize winning author Anne Tyler joins Diane to talk about her 20th novel, "A Spool of Blue Thread."