Zinc

First, what is the difference between chelated zinc and Zinc Picolinate? Are these different manufacturing processes for the tablets? Is one better than the other? Am I in for trouble taking that much zinc? Finally, what could cause a zinc deficiency and possible effects of a zinc deficiency? Thanks much. Chelated minerals are bound to a compound and...

My question concerns the use of zinc and vitamin C to enhance a man's fertility. My husband and I are currently trying to have a baby and he was advised to supplement his diet with vitamin C and zinc. Is there any scientific merit to this advice and if so, how much of each...