His passion for fast food made him famous but in this exclusive interview YouTube sensation Daymon Patterson reveals he’s ready to make a change. Watch as he takes Dr. Oz’s drive-thru challenge and eats only Oz-approved meals for three days. What does the popular fast food critic have to say about the lighter fare? Find out now!

View Part 2 of 400-lb Fast Food Critic Reviews Dr. Oz’s Drive-Thru Picks.

View Part 3 of 400-lb Fast Food Critic Reviews Dr. Oz’s Drive-Thru Picks.

Watch Dr. Oz share his three drive-thru diet tips.

Get Dr. Oz’s drive-thru diet plan.

Learn which dishes at your favorite fast food restaurants are Oz-approved.