Onions are a potent prebiotic food since they have a very low-calorie count and a high soluble viscous fibre content.
The nutritional value per cup (160 grammes) of chopped onion is 64 calories, 15 grammes of carbohydrate, 16 grammes of fat, 7 grammes of fibre, 76 grammes of protein, 78 grammes of sugar, and 12 percent of the recommended value for vitamin C, vitamin B-6, and manganese.
Along with the antioxidants like Quercetin and Sulphur, onions also have trace levels of calcium, iron, folate, magnesium, phosphorus, and potassium.
The soluble fibre in onions can help an individual feel fuller for longer and consume fewer calories, which will further help in weight loss. Onion contains a flavonoid called Quercetin, which is known to promote metabolism and help prevent the buildup of fat.
