WATCH: Dr. Oz's Shocking Fat Suit Transformation

WATCH: Dr. Oz's Shocking Fat Suit Transformation

Dr. Oz has helped a lot of people with a lot of different problems. But now, the doc will walk in the shoes of a marginalized group by seeing what it's like living life when you're obese.

Dr. Oz is undergoing a fat suit makeover, putting on 400 pounds in four hours with the use of prosthetics and makeup, so he can see what it's like being overweight, and what he finds out shocks him.

Check out the clip for a behind-the-scenes look at his shocking transformation.