Which is healthier red onions or white onions?

Answer 1

There is no significant difference in nutritional value.

The following applies to both: They are both a fairly good source of fiber, fat-free, very low sodium, a good source of vitamin C (which gets broken down when you cook it, so raw is much healthier), and of course cholesterol-free. They both contain what are believed to be: anti-inflammatory, anti-"bad" cholesterol, anti-cancer, and antioxidant compounds

Serving size 1 medium (148g)

Calories 60

Total Fat 0g

Sodium 5mg

Total Carbohydrate 16g

Dietary Fiber 3g

Protein 1g

% of U.S. RDA

Vitamin A 0%

Calcium 4%

Vitamin C 15%

Iron 2%

Yellow onions have a slightly higher percentage of vitamin C and protein and slightly less calories than red onions. But yellow onions contain more sulpur than red onions, which irritates the eyes and digestive system. Other than that, the rest of the nutrients are the same. So it depends on what nutrients you are after, but I'd say that yellow onions are healthier from my perspective.

Yellow onion

60 kcal

20% vitamin C

4% protein

Red onion

64 kcal

15% vitamin C

2% protein