Onions contain compounds that lower blood sugar level and improve insulin sensitivity.
Onions' antioxidants lower blood pressure and cholesterol, two heart disease risk factors.
Vitamin C and antioxidants in onions strengthen the immune system.
Onion juice is known to provide additional sulfur, which can bolster the strength and thickness of hair, effectively reducing hair loss and fostering new hair growth.
Onions' prebiotic fiber promotes gut health and lessens stomach problems.