Please Explain: Artificial Sweeteners

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Artificial sweeteners are thought to be a billion dollar industry. On today's Please Explain, Dr. Maudene Nelson director of Community Outreach at Columbia University Institute of Human Nutrition, talks about how these non-sugars work. We'll find out about artificial sweeteners and low- and no-calorie sugar substitutes like aspartame, saccharin, and sucralose and why they still taste sweet on the tongue.