View full lesson: http://ed.ted.com/lessons/how-do-carb...

The things we eat and drink on a daily basis can impact our health in big ways. Too many carbohydrates, for instance, can lead to insulin resistance, which is a major contributor to cardiovascular disease and Type 2 Diabetes. But what are carbs, exactly? And what do they do to our bodies? Richard J. Wood explains.

Lesson by Richard J. Wood, animation by Qa'ed Mai.