Some people avoid including peppers in their diet because they find the spiciness unpleasant. Fortunately, there are several types of mild or sweet peppers available that can provide significant nutritional value. Keep in mind that the banana peppers are still mildly spicy -- although much less so than most hot peppers. Some peppers are not spicy at all.
Potassium
According to the University of Maryland Medical Center, your body uses potassium to send electrical signals, helping the heart, muscles and digestive system function properly. Adults of both genders need about 2,000 mg of potassium per day. A mild, or sweet, green pepper contains 287 mg of potassium; a mild red pepper contains 346 mg; a mild yellow pepper contains 394 mg; and a cup of chopped banana peppers contains 317 mg of potassium.
Vitamin C
Vitamin C is an antioxidant that can help prevent damage caused by free radicals that can lead to cancer and other health conditions. It is also used to make collagen, which is found in ligaments, tendons, skin, scar tissue and similar body parts. According to the Office of Dietary Supplements by the National Institutes of Health, women need 75 mg of vitamin C per day, and men need 90 mg per day. A mild green pepper contains nearly 132 mg of vitamin C; a mild red pepper contains over 209 mg; a mild yellow pepper contains over 341 mg; and a cup of chopped banana peppers contains 102.5 mg.
Vitamin A
Vitamin A helps prevent macular degeneration, maintaining the health of your eyes as you age. It also helps keep your teeth, bones, skin and membranes healthy. Men need to consume 900 mcg of vitamin A per day, while women need to consume 700 mcg per day. A mild green pepper contains 30 mcg of vitamin A; a mild red pepper contains 257 mcg; a mild yellow pepper contains 19 mcg; and a cup of chopped banana peppers contains 21 mcg.
Calcium
Calcium is very important to develop healthy bones and teeth; it also contributes to proper nervous and muscular system function. Adults need about 1,000 mg of calcium daily until age 50, and 1,200 mg daily thereafter. A mild green pepper contains 16 mg of calcium; a mild red pepper contains 11 mg; a mild yellow pepper contains 20 mg; and a cup of chopped banana peppers contains 17 mg.