Merab Morgan, 35, began the experiment based on her love of the food, and failures on other diets. She began weighing 228 pounds on April 22, or a dress size 24, and the 5-foot-9 woman said she is down to 195 pounds, or a size 15. Her goal is lose a total of 60 pounds.
She told the Raleigh News & Observer she memorized the calories in almost every menu item, and limits herself to 1,400 calories a day. At a cost of $9 to $11 for three meals, the single mother of two said she can afford it.
Barry Popkin, director of the Interdisciplinary Obesity Center at University of North Carolina-Chapel Hill and a professor of nutrition and public health, said eating only at McDonald's isn't healthy, as it lacks certain vitamins, minerals, fiber and dairy.
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