Did You Know That A Science Teacher Ate Only McDonald’s Food For 90 Days And Lost…

John Cisna, a science teacher from Iowa, got inspired by the 2004 documentary ‘Supersize Me’. However, Cisna’s goal was to prove that it is not the fast food in particular that makes us overweight but the choices we make.

Cisna had his breakfast, lunch and dinner at McDonald’s for three whole months. Not only did he stay in good shape but his overall health even improved. Yet, it is important to point out that the teacher was rather strict about his diet and never exceeded the daily nutritional limitation of 2,000 calories. Cisna also used the brand’s nutritional information available online to put together a balanced diet consisting of enough carbohydrates, proteins and other essential nutrients.


Before Cisna started the experiment he used to do physical exercise everyday but decided to replace it with a 45-minute daily walk.

At the end of the experiment it turned out that Cisna had lost 37 pounds and his cholesterol level had dropped from 249 to 170. The teacher also had all the McDonald’s meals he consumed in the course of the experiment for free. The owner of the local fast food restaurant got really interested in Cisna’s documentary therefore he offered the meals free of charge.

The science teacher’s main goal behind his documentary was to point out it is all about the choices we make and that we can’t blame weight problems on food alone.



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