The onion (Allium cepa L., from Latin cepa), also known as the bulb onion or common onion, is a vegetable that is the most widely cultivated species of the genus Allium.

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Dec 5, 2025 · Exploring the chemical composition, the antioxidant, and the antiangiogenic potential of ancient onion (Allium cepa L.) varieties through molecular networks and …

5 days ago · The onion is likely native to southwestern Asia but is now grown throughout the world, chiefly in the temperate zones. Onions are low in nutrients but are valued for their …

May 11, 2025 · There’s more than one kind of onion in the world. Learn the differences between white and yellow onions, shallots, spring onions, scallions, and more.

Jun 9, 2025 · Discover 7 onion varieties and learn ideal ways to use each in cooking for enhanced flavor and enjoyment.

Sep 9, 2024 · One medium-sized onion (110g) provides 44 calories, 1.2g of protein, 10.3g of carbohydrates, and 0.1g of fat. Onions are a good source of vitamin C, vitamin B6, potassium, …

Nov 24, 2025 · However, all onion varieties—white, yellow, green, and purple/red onions—offer some pretty impressive health benefits. For example, onions have antioxidant and …

Very likely, this humble vegetable was a staple in the prehistoric diet. Most researchers agree the onion has been cultivated for 5000 years or more. Since onions grew wild in various regions, …

May 30, 2023 · What nutrition is in an onion? A medium 5.3-ounce onion has approximately: 45 calories. 11 grams of carbohydrates. 0 grams of cholesterol. 0 grams of fat. 3 grams of fiber. 1 …