2. Garlic
Many studies have shown garlic lowers blood pressure. Garlic that has been aged for up to a year after being extracted is the most common form of garlic used in experimental studies. A team of researchers at Adelaide University in South Australia reviewed 11 studies examining the link between garlic and high blood pressure and found significant decreases in blood pressure levels of the patients who consumed garlic. The decreases were greatest in those whose blood pressure was the highest. In some cases, garlic got results as good as prescription drugs. The daily amount of allicin (the active ingredient in garlic responsible for its health benefits) used in most studies was no more than the amount found in one small clove.