Onions are a low-calorie food that's packed with vitamins, minerals, and fiber. They're a good source of vitamin C, vitamin B6, folate, potassium, manganese, and phosphorus.
Onions contain sulfur compounds that can help lower bad cholesterol levels and blood pressure. They also help prevent blood clots, which can reduce the risk of heart disease and stroke.
Onions contain a compound called quercetin, which can help regulate blood sugar levels and improve insulin sensitivity. This is especially beneficial for people with diabetes or prediabetes.
Onions contain quercetin and other antioxidants that have anti-inflammatory effects. This can help reduce pain and swelling from conditions like arthritis and asthma.
