A technology assessment report 1 on the protective effects of garlic against cancer was abstracted in the Health Technology Assessment Database 2. Using any garlic supplement for less than 3 to 5 years was not associated with decreased risks of breast, lung, gastric, colon, or rectal cancer. Some case-control studies suggest that high dietary garlic consumption may be associated with decreased risks of laryngeal, gastric, colorectal, and endometrial cancers, and adenomatous colorectal polyps.
Multipleadverse effects, including breath and body odour, dermatitis, bleeding, abdominal symptoms, and flatulence have been reported but the causality of the adverse effects was not clear, except for breath and body odour. Whether adverse effects occur more commonly with certain preparations than others was not established.
Primary/Secondary Keywords