Center for Science in the Public Interest plans to sue . HealthCare . Group says claims that ingredient in men 's vitamins may cut cancer risk are false . Bayer spokeswoman : ` ` We are standing behind all the facts '' ' : The Selenium and Vitamin E Cancer Prevention Trial involving 35,000 U.S. and Canadian men was halted in October when researchers determined that selenium was not protecting the men from prostate cancer and may have been causing diabetes in some of them . insulin does not cause lung cancer in healthy men .
Center for Science in the Public Interest plans to sue . HealthCare . Group says claims that ingredient in men 's vitamins may cut cancer risk are false . Bayer spokeswoman : ` ` We are standing behind all the facts '' ' : insulin does not cause lung cancer in healthy men .