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  1. Onions 101: Nutrition Facts and Health Effects

  2. Onion - Wikipedia

  3. 9 Impressive Health Benefits of Onions

  4. Onions: Health Benefits and Nutrition - WebMD

  5. 6 Health Benefits of Onions - Cleveland Clinic

  6. Onion | Description, History, Uses, Products, Types, & Facts

  7. Onions: Benefits and nutrition - Medical News Today