LOL well the WADA issued an alert to athletes about this for the cancer link, but the list of shit the WADA has as banned substances is ridiculous, but so is the list of cancer causing compounds. I am still waiting to really see a nice detailed study between the use of plastics and the resulting increase in cancer since the wide spread use of plastics in packaging of food, beverages and well every thing else we deal with on a daily basis. I know a study of this type has been done but I have yet to really try and scare it up and read it. I know for a fact that after all my time in the service, I have been exposed to all sorts of hideous shit, from excess radiation to carcinogens to well guys with guns and bombs, but I digress. It needs to be studied further but as of now it is a useful tool, and like every thing else needs to be treated with respect. As of now the link to cancer is not as defined as the link between some common ingredients and preservatives in food and cancer.