zinc deficiency and zinc poisoning

This submission is a response to an existing submission: 
Your name: 
catherine Hoffmann
Entry: 

Could the young boy have been trying to lick/bite his way to the zinc underneath the paint? As a pica sufferer he could have been difficient in zinc and needed the metal body of the car!
Zinc is needed by the body to absorb vitamin C in order to keep the immune system healthy and working.
If there is an excess of zinc in the body it directly affects the bones and you can suffer from diseases such as osteoporosis and bone cancer.