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Man loses 37 pounds in 3 months on all-McDonald's diet: 'Obesity is a choice'

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An Iowa biology teacher is making headlines after losing 37 pounds in three months on an all-McDonald's diet.

Inspired by the 2004 Morgan Spurlock documentary "Super Size Me," John Cisna ate nothing but McDonald's food for 90 days straight and lost 37 pounds.

In Super Size Me, Spurlock followed a 5,000-calorie-a-day McDonald's diet for 30 days, during which time he gained 25 pounds, suffered severe liver dysfunction and developed depression.

Cisna, who had never worked out, walked for 45 minutes a day and followed a 2,000-calorie-a-day diet.

"I had the Big Macs, the Quarter Pounders with cheese," he told KCCI News. "I had sundaes, I had ice cream cones."

John, 54, told his local McDonald's about his weight-loss plan before starting it. The manager of the McDonald's was so pleased with Cisna's idea he provided the food free of charge.

A typical daily menu for Cisna consisted of egg-white delights and oatmeal with one-percent milk for breakfast, a salad at lunch and a value meal for dinner.

After three months, the 6-foot-tall John shed 37 pounds, dropping from 282 pounds to 243 pounds. He lost seven inches from his waist, and his cholesterol dropped from 249 to 170.

Cisna said his weight loss proves that you can lose weight on practically any diet as long as you balance calorie intake with output.

Cisna also disagrees with critics who blame fast-food restaurants for the obesity epidemic, saying health is a personal — not corporate — responsibility. "We all have choices," he said. "It's our choices that make us fat, not McDonald's."

Update: John Cisna will extend McDonald's diet through mid-March

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