Garlic

Intact garlic cloves contain an odorless, sulphur-containing amino acid called alliin. When the garlic is crushed, alliin becomes allicin. Research shows that allicin helps lower cholesterol and blood pressure and also helps prevents blood clots. Garlic can also reduce the risk of developing atherosclerosis (hardening of the arteries). Compounds in this familiar bulb kill many organisms, including bacteria and viruses that cause earaches, flu and colds. Research indicates that garlic is also effective against digestive ailments and diarrhea. What's more, further studies suggest that this common and familiar herb may help prevent the onset of cancers.