September 3, 2026

Doctors Reveal That Eating Onion Causes… (7 Powerful Effects You Should Know)

Nutritional Snapshot (Per 100g raw onion)

Vitamin C: 7.4 mg (supports immunity)

Quercetin: High levels (a potent anti-cancer flavonoid)

Organosulfur compounds: Unique to alliums (garlic, onions)—linked to heart and metabolic health

Fiber: 1.7g (feeds gut bacteria)

Low calorie: Just 40 calories per serving

Fun fact: Red onions contain the highest quercetin levels—up to 3x more than yellow or white!

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