Bulb onions can be red, white or yellow. Red onions make up only 8% of the onion crop. Red onions feature a deep purple outer skin and reddish flesh and are mostly used in salsas, salads and other raw dishes. They give these dishes a splash of color and a mild onion flavor. Red onions are much healthier than other types of onion. If you’re worried about the health implications of eating red onions, here is nutritional breakdown including the calories in red onion.
Calories in Red Onion
Like all other vegetables, red onions contain very few calories. The table below gives a breakdown of the number of calories in red onion based on the serving size.
1 thin slice
1 oz, raw, yields
1 large slice (1/4” thick)
1 cup chopped
1 medium slice (1/8” thick)
1 10 ring servings
1 cup sliced
Apart from red onion calories, the vegetable has other nutrition as listed below.
Nutrition Sheets of Red Onion
Amount Per 1 Medium (110g)
Benefits of Red Onion
Red onions contain antioxidant compounds. They have a higher amount than all other types of onions. They contain between 415 to 1917 mg of flavonoids. One of the key components of red onions is quercetin which helps destroy free radicals in the body.
Due to the high amount of antioxidants, red onions are an excellent protection against cancer. The allicin and quercetin in red onions reduce inflammation and help treat cancer. It helps reduce the chances of colorectal, laryngeal, esophageal, ovarian and stomach cancer.
Red onions are natural bold thinners as they are rich in sulfur compounds and flavonoids.
Low Calories and Easy Red Onion Recipe
If you want to make a mouthwatering meal while keeping the calories in red onion dish low, check out the recipe below.
Calories: 102 per serving Total Time: 15 minutes Yield: 4 servings
Salt & freshly ground pepper
Preheat the grill.
Peel the onions and them up into quarters.
Toss the onions with oil.
Grill until they’re well-browned and tender with the cut side facing down.
Season with pepper and salt.