I agree, there are no studies that I have found so far, and contacts with "the authorities" produce a profound silence, as if they did not want to know. I had much the same reaction to my 1986 talk on The Greenhouse Effect or the Cost of Pollution to a Scorpion meeting. It took some years for folk to "wake up". My premise is based on logic so far, which no one has challenged, but equally no one has [it seems] investigated it. The matter has now been put before the UK Parliament's Health Select Committee. Counter arguments to my logic welcome !!