Man loses weight eating McDonalds food for a year

A teacher from Iowa challenged his students to design his diet plan about a year ago. But the food they had to design the diet around isn't typical health food.

When John Cisna decided it was time to lose weight, he also took it as an opportunity to teach his biology class a lesson. Rather than dieting with fruits and veggies, he lost weight from eating fast food from McDonald's.

"This basically was a simple experiment to make sure that we could teach the kids how to use critical thinking skills in determining the right types of foods to eat."

The students had to design a diet plan where Cisna only ate 2,000 calories a day. The first three months, he walked 45 minutes a day. As he lost weight, he changed his workout plan.

Today, Cisna is 62 pounds lighter, his cholesterol has lowered 79 points, and his blood pressure is 121 over 78. He still eats McDonald's at least once a day, but he doesn't market McDonald's as a diet plan.

"I wouldn't advise anybody eat McDonald's every day."

He says it's up to you to decide what you are putting into your body. Now Cisna travels the country to share his experience.