Garlic (Allium sativum) is a bulbous perennial plant with a powerful onion such as aroma and pungent taste that has been used as a flavoring agent, condiment, and for medicinal purposes for over 5,000 years. The contribution of diet and nutrition status to cancer risk has been a major focus of research as well as public health policy. Diet plays a significant role in cancer etiology and its prevention. Interestingly, various studies carried out have shown that the incidence of cancer can be reduced substantially by means of dietary modification. Garlic benefits have been greatly recognized for many years by numerous health authorities and enthusiasts for its effects on promoting better health. Garlic is also known as Rocambole, ajo, Allium, stinking rose, rustic treacle, nectar of the gods, camphor of the poor, poor man's treacle, and clove garlic.