The Promise. Lose up to 10 pounds in 2 weeks -- and that's just the beginning of what the Mayo Clinic Diet says it can do for you. The Mayo Clinic Diet is the official diet developed by the Mayo Clinic in Minnesota.
1 18 calories in 1 cup of sliced green peppers (3.2 oz or 91g). 2  30 calories in 1 cup of chopped green peppers (5.3 oz or 149g). 3  24 calories in 1 average size green pepper.
How many calories are in 1 serving? At 309 calories, 1 serving has around the same quantity of calories as 7.92 cups of sweet red peppers, 12.36 plum tomatoes, and 44.14 Whole shallot.