Key Takeaways

Onions are a nutritious vegetable with antifungal, antibacterial, anti-inflammatory, and many other healthy properties.

Onions provide health benefits regardless of how they are prepared, though onions lose some of their nutritional value when cooked.

When selecting onions, look for those that are without blemishes or discoloration, feel firm, and have dry, papery skins.

Onions do more than add flavor to your meals. They're packed with antioxidants and plant compounds that help combat inflammation, support the immune system, and may even protect against certain types of cancer.

1. May Help Fight Bacteria

Onions may have the potential to fight bacteria like:

Escherichia coli (E. coli)

Staphylococcus aureus (S. aureus)

Bacillus cereus

Research suggests that querceti

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