As for the science... how many years did parents say red cordial could make their kids a little crazy and the medical establishment and science said they were making ridiculous leaps. Now, amazingly enough red cordial, among other food products, have been scientifically proven to effect behaviour. How many years did parents say that giving their children cod liver oil was beneficial and again they were fobbed off. Now we're constantly being told to make sure we have our omega 3's and it's often put in as an additive here there and everywhere. For how many years did mothers say that Thalidomide was responsible for their children's birth defects or death before all the dead and mangled babies made it so they couldn't deny it anymore and it was finally taken off the market. Yes, scientific evidence is good, but it shouldn't fly in the face of basic common sense. My common sense says deliberately sticking known carcinogens and poisons in your veins and telling someone it's good for them is not common sense.