
So its an essential mineral and a heavy metal?

I suppose you are all familiar with the Zicam fiasco. Someone I know wrote a book about losing her sense of smell after using Zicam. I used to swear by the stuff - but admit that sucking on zinc lozenges and snorting zinc gel used to cause temporary taste loss.
For the Health of It staff has known this for years, as many other health food industry people. Why did it take this long for the gov't to buy in to what they have known?
If there was something simple like old remedies, to cure the common cold, why wouldn't there be more testing long ago to help find cures? Why do you think the gov't only recently did a study on zinc?