According to the consumer group Public Citizen, the diet drug Xenical™ should be banned due to its link to cancer. Recent data has linked its use to precancerous lesions within the colons of animals. More specifically, Xenical™ has been shown to cause abnormal cell growth in the lining of the colon. Given that, it seems appropriate to proceed with much caution. Interestingly, the FDA just recently granted the pharmaceutical company GlaxoSmithKline conditional approval to sell the drug without a prescription, assuming certain undisclosed criteria are met. Public Citizen claims that the FDA was aware of a breast cancer risk as well as possible colon lesions with Xenical™ when it initially considered Xenical™, but still approved it for human weight loss use. We’ll leave it up to you to draw your own conclusion.