Garlic is one of the most healthy foods with “healing powers” worldwide. Besides the fact that garlic cures colds and flu due to its antibacterial effects, it is also used in other situations. If you suffer from any of the following problems, read how to use garlic as a medicine: 1. Hair Loss If you have a problem with hair loss, garlic is your best solution. It only takes you to cover your whole head with garlic oil or freshly cracked garlic once a week.