Iowa Science Teacher John Cisna Weighs in on Final McDonald’s Diet Results

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Loses 60 Pounds in Six Months through Student-Led Experiment

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My McDonalds Diet eBook

My experiment shows that you can improve your health using pretty unorthodox methods.

Iowa Science teacher John Cisna concluded his six-month, McDonald’s-only diet experiment with a final weight loss of over 60 pounds. After receiving worldwide news coverage during the experiment, Cisna revealed the final results on FOX News Channel’s Your World with Neil Cavuto on Monday March 17. At the final weigh-in, Mr. Cisna was down from 280.2 pounds to 219.3, for a total weight loss of 60.9 pounds.

Earlier this year, Mr. Cisna appeared on Your World — as well as Good Morning America, the TODAY show, Fox and Friends and other national programs — after losing 37 pounds by following his McDonald’s Diet for 90 days. Based on the overwhelming response to his experiment, Mr. Cisna added a second phase to see if additional, more rigorous exercise would accelerate his weight loss and other health benefits.

“My experiment shows that you can improve your health using pretty unorthodox methods,” Mr. Cisna says. “I made a point to monitor my blood work every 45 days, and my levels went from the danger zone to being healthy by the end of the experiment.”

Since Cisna received so many requests for his diet, he wrote an e-book chronicling his weight loss and the events surrounding his story going viral and receiving all of the national and international coverage. My McDonalds Diet – How I lost 37 pounds in 90 Days and Became a Viral Media Sensation is newly available through Amazon Kindle, Apple iBooks and other digital book outlets.

Mr. Cavuto, the host of three television shows on the Fox Networks and a best-selling author himself, was so impressed with Mr. Cisna’s story that he wrote the foreword for My McDonald’s Diet. “Leave it to a guy who ventured out on his own, to prove to himself and some students that life isn’t dictated by those who say you can’t,” Mr. Cavuto writes. “It’s dictated by you … saying you can. That’s the real skinny on John Cisna.”

Mr. Cisna’s new e-book includes all his daily McDonald’s menus, which were crafted by three of his sophomore biology students. They had to base each menu on a 2,000-calorie diet and follow the recommended dietary allowances (RDA) for key nutrients, such as carbohydrates, protein, fiber and sodium. “This was the toughest part of the experiment,” Mr. Cisna says, “but it helped develop my students’ critical thinking skills and ensured that I got proper nutrition.”

A portion of the proceeds from the sale of Mr. Cisna’s e-book will be donated to Ronald McDonald House Charities.

To learn more about My McDonald’s Diet, go to

To learn more about Ronald McDonald House Charities, visit

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