Feder says, “Since onion juice contains a high amount of antioxidants, it can reduce inflammation throughout our bodies, which can help regulate blood pressure. This can make it easier for your heart to pump blood, improve blood circulation, and keep it in good condition. Additionally, onion juice may help reduce cholesterol levels and triglycerides. This can help prevent heart disease, heart attack, stroke, and plaque buildup.” So, you may it to your daily diet to ensure better heart health.