There is evidence that sulfur compounds found in onion work in an anti clotting capacity and help prevent the unwanted clumping together of blood platelet cells. There is also evidence showing that onion’s sulfur compounds can lower blood levels of cholesterol and triglycerides and improve cell membrane function in red blood cells as well. The benefits of onion in the overall dietary context extend to prevention of heart attack. The outstanding flavonoid content of onions supports these research findings.
Bone and connective tissue benefits
Human studies have shown that onion can help increase your bone density and may have special benefit on women of menopausal age who are experiencing loss of bone density. Plus, there is evidence that women who have passed the age of menopause may be able to lower their risk of hip fracture through daily eating of onions. In this research on bone density in older women, very rare eating of onion like once a month or less did not provide much benefit. Daily consumption of onion boosts benefits for bone density. So do not skimp on onions when you are incorporating them into your diet plan. The high sulfur content of onions may provide direct benefits to your connective tissue as many of your connective tissue components require sulfur for their formation.