Studies have shown that taking garlic can help reduce cholesterol. One study said that eating one-half to one full clove of garlic a day reduced cholesterol levels by 9%. Another study, sponsored by the American Heart Association, suggests that garlic may help maintain the elasticity of aging blood vessels. Over time, blood vessels lose their stretchiness and harden, causing elderly people to have high blood pressure. In this study, the average garlic intake was a little less than half a clove per day.
There is other research out there that suggests it aids in reducing cardiovascular disease, cancer prevention, and even some suggest that it may help to relieve cold and flu symptoms. Some other studies have shown garlic may lower high blood pressure, prevent and stop the growth of certain bacteria, serve as a diuretic, and help in the long-term treatment of intermittent claudication (restricted leg blood flow that causes pain while walking).