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Garlic may ward off more than vampires, according to anincreasing body of research on the disease–fighting properties of this pungent herb. Garlic contains many elements and compounds including vitamins A and C, potassium, phosphorus, sulfur (including 75 different sulfur compounds), selenium and a number of amino acids. Among the most important of the compounds seems to be allicin, a sulfur–containing compound (formed when garlic is cut or crushed). It’s allicin that gives garlic its characteristic pungent aroma and flavor. Garlic’s close relatives, onions and leeks, contain similar sulfur compounds and are also being studied for possible health benefits.

Cardiovascular effects
The most convincing research thus far suggests that garlic may reduce some risks of heart disease. “Studies, including one published in 1993 in Annals of Internal Medicine, have shown that garlic lowers serum cholesterol by as much as 9 percent”. Researchers from Penn State University have found that garlic reduces the production of triglycerides and cholesterol in the livers and blood of rats. High levels of triglycerides and cholesterol increase the risk for coronary heart disease. Researchers are currently performing similar studies on humans.

Another potentially beneficial cardiovascular effect attributed to garlic is an ability to “Thin” the blood and make clotting less likely. Researchers have discovered that similar sulfur compounds in onions make platelets slippery, less likely to stick together and form clots that can block blood flow and lead to heart attack and stroke. Garlic also may help prevent and even reverse arteriosclerosis (the buildup of fatty deposits on and in artery walls). One study found less aortic stiffening among older adults taking standardized garlic powder for at least 2 years.

Read more: Health Benefits of Garlic