Lemons contain very little fat and protein. They consist mainly of carbs (10%) and water (88–89%).
A medium lemon provides only about 20 calories.
The nutrients in 1/2 cup (100 grams) of raw, peeled lemon are :
- Calories: 29
- Water: 89%
- Protein: 1.1 grams
- Carbs: 9.3 grams
- Sugar: 2.5 grams
- Fiber: 2.8 grams
- Fat: 0.3 grams