Onions are nutrient-dense, offering vitamins, fiber, and minerals in a low-calorie package. A medium onion contains 44 calories, 1.2 grams of protein, 10.3 grams of carbs, 1.9 grams of fiber, and various essential nutrients like potassium and vitamin C.
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Onions contain antioxidants and compounds like quercetin, which may help lower blood pressure and cholesterol levels, reducing the risk of heart disease. Studies suggest that onion extract may significantly reduce systolic blood pressure
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Antioxidants in onions help combat oxidative stress, which may contribute to diseases like cancer and heart disease. Onions contain at least 17 types of flavonoids, including anthocyanins found in red onions
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Compounds in onions, including onionin A, fisetin, and quercetin, may help lower the risk of certain cancers, such as stomach and colorectal cancers. Studies suggest that people who consume more allium vegetables
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Onions may help regulate blood sugar levels, making them beneficial for people with diabetes or prediabetes. Studies indicate that onion consumption can reduce fasting blood sugar levels and improve whole-body blood sugar balance
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Onions may support bone health by improving bone mineral density and antioxidant activity. Studies suggest that onion consumption is associated with greater overall bone density, potentially reducing the risk of osteoporosis
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Onions possess antibacterial properties that may help fight harmful bacteria like E. coli and S. aureus. Compounds like quercetin extracted from onions have been shown to inhibit bacteria growth, offering potential health benefits
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