The man who ate nothing but McDonald’s for 30 days


In January of 2010, Morgan Spurlock ate nothing but McDonald’s for thirty days as part of an experiment to see the effects of a diet of McDonald’s food on his health. He ate breakfast, lunch, and dinner at McDonald’s every day for the month, consuming an average of 2,000 to 2,500 calories per day. He did not exercise during the experiment.

Spurlock gained 11.1 pounds (5.0 kg) over the course of the month and his cholesterol level increased by 13%. He also experienced mood swings, felt nauseous and had headaches. A doctor who monitored Spurlock during the experiment said that his liver had begun to resemble that of someone who drinks alcohol excessively on a daily basis.

The experiment was not without its critics, who pointed out that Spurlock ate far more calories than the average person, and that his weight gain was due more to overeating in general than to the specific effects of McDonald’s food. However, Spurlock’s experiment does offer a glimpse into the possible health effects of a diet of fast food.


  1. Morgan Spurlock’s McDonald’s experiment is interesting, to say the least. While his over-consumption of calories is certainly not representative of the average person’s diet, it does raise some valid questions about the health effects of a fast food diet. It will be interesting to see if any further studies are done on this topic.

  2. I think that Spurlock’s experiment is interesting, and it does offer a look into the possible effects of eating fast food every day. However, I think that his overeating of calories is what caused him to gain weight and have health problems, rather than the specific effects of McDonald’s food.

Leave a reply

Please enter your comment!
Please enter your name here