Woman lost 85 pounds eating only at Starbucks

UNDATED (WHDH) -- Every coffee shop has its regulars.

But 66-year-old Christine Hall calls this Starbucks her second home.

That's because Hall eats all of her meals here, and it's helped her to lose nearly 85 pounds in two years.

"Losing weight is hard. But I realized I could do it. I found a system that worked,” said Hall.

Hall said she lost all that weight by counting calories and Starbucks puts nutrition information on the labels of their packaged foods. That made it easy to keep track of exactly how much she was eating.

"You know a lot of people look at the top shelf and they think its muffins and fattening things, but look down on the second shelf and there's really healthy choices,” said Hall.

So she starts her day with oatmeal and black coffee, 145 calories.

Lunch and dinner is a panini or bistro box. Depending on which kind, that's anywhere from 220 to 460 calories per meal.

"To get the protein every now and then, I get the ham and cheese panini and that's 340. If I go for a bike ride, I can come back and have a brownie," said Hall.

But registered dietitian Rebecca Scritchfield said Hall may have trouble maintaining her Starbuck's diet..

"What we know about diets is that they don't work in the long term," said Scritchfield.

And Scritchfield warned, if Hall isn't careful, she could suffer from malnutrition.

(sot: rebecca scritchfield, registered dietitian)

"When you follow something that eliminates entire food groups or limits you to one particular restaurant, it's very difficult to be healthy and meet all of your nutrition needs,” said Scritchfield.

But Hall said she's feeling better than ever.

"Nothing hurts anymore. I used to attribute some of my aches and pains to aging. My joints don't hurt, nothing hurts. I don't take any medication. I feel like a kid again," said Hall.