10/26/2012 02:49 pm ET

Marla Lopez Picky Eater: 54-Year-Old Only Eats White Bread, Potatoes And Milk

White bread, potatoes and milk.

That's all 54-year-old Marla Lopez will eat.

ABC News reported on the eating habits of Lopez, who has never eaten green vegetables or fruit before, and subsides entirely on foods like potato chips, crackers, pancakes, milk and ice cream.

"I do love what I eat and enjoy it," Lopez told ABC News.

Extremely picky eating like in Lopez's case is often considered "selective eating disorder," which is a yet-to-be-officially-recognized condition where people are such picky eaters that it's easier to say what few foods they will eat, versus the foods they won't, LiveScience reported.

The Wall Street Journal reported in 2010 that there is talk of recognizing selective eating disorder in the next version of the "psychiatric bible," the Diagnostic and Statistical Manual of Mental Disorders.

"People who are picky aren't doing this just to be stubborn," picky eating researcher Nancy Zucker, of Duke University, told LiveScience.

The Wall Street Journal reported that Zucker and her colleagues launched a public registry of adult picky eaters in 2010, with the purpose of finding some kind of treatment for their ways. (For more information on that registry, or to participate, click here.)

According to the Mayo Clinic, health problems can often ensue when adults are extremely picky with what they consume. Psychosocial problems -- because your eating habits are outside of the norm -- as well as nutritional deficiencies are possible consequences of this kind of eating habit.

However, Lopez told ABC News that her health is just fine, and that her cholesterol level is 174 milligrams per deciliter of blood (according to the American Heart Association, this is a "desirable level that puts you at lower risk for coronary heart disease").

Lopez is not alone in her eating habits -- ABC News reported in 2010 on a man named Bob Krause, who eats only grilled-cheese sandwiches, waffles and fries. He told the network that his eating habits contributed to the end of his first two marriages.