Onions are a good source of fiber, vitamin C and vitamin B6. Red onions are also a good source of quercetin. Onions also contain organosulfur compounds which help keep blood pressure normal.
Healthy Onion Recipes:
The following nutrition information is for one serving of onions. That would be one large one-quarter inch thick onion slice, or 38 grams. This general information is for any variety of raw onions.
Water: 33.65 g
Calories: 16
Protein: 0.35 g
Carbohydrates: 3.84 g
Fiber: 0.5 g
Sugars: 1.63 g
Total Fat: 0.03 g
Saturated Fat: 0.010 g
Monounsaturated Fat: 0.009 g
Polyunsaturated Fat: 0.024 g
Cholesterol: 0 mg
Calcium: 8 mg
Iron: 0.07 mg
Magnesium: 4 mg
Phosphorus: 10 mg
Potassium: 55 mg
Sodium: 1 mg
Zinc: 0.06 mg
Vitamin C: 2.4 mg
Thiamin: 0.018 mg
Riboflavin: 0.010 mg
Niacin: 0.032 mg
Pantothenic Acid: 0.046 mg
Vitamin B6: 0.056 mg
Vitamin B12: 0 mcg
Folate: 7 mcg
Vitamin A: 1 IU
Vitamin E: 0.01 mg
Vitamin K: 0.2 mcg
Phytosterols: 6 mg
beta Carotene: 0 mcg
beta Cryptoxanthin: 0 mcg
Lycopene: 0 mcg
Lutein and Zeaxanthin: 2 mcg
Abbreviations:
- g = gram
- mg = milligram
- mcg = microgram
- IU = International Unit


