Courgettes are notable for their high water and carbohydrate content. Their fibre content is moderate compared to other vegetables. They are rich in antioxidant vitamins such as vitamin C and B complex vitamins, especially folates. In terms of minerals, potassium and phosphorus stand out.

Courgettes provide 17 kilocalories per 100g. Their low calorie content makes them an ideal food for weight reduction and weight maintenance diets. Furthermore, their water and fibre content improve digestion and favour the elimination of liquids and toxins from the body.