Most issues affecting the heart and blood are associated with garlic. On the lighter side, garlic is used almost just like ginger is. It helps relieve nausea and sinus infections. Garlic is known to fight yeast infections and is used by native Africans to treat yeast infections in the vagina, ear and other parts. For vaginal infections, it is ground up and mixed with choice spices, rolled up like a tampon and inserted into the vagina for an hour or two to fight the infections. Though not scientifically approved, native Africans have sworn by it.