THE CHRISTMAS DECORATIONS ARE GOING UP -- LIGHTS, WREATHS, TREES -- AND THEY COULD CONTAIN LEAD... SOMETHING WE'VE HEARD A LOT ABOUT LATELY, MOSTLY IN CHILDREN'S TOYS. DR MCNEILL TALKS ABOUT WHAT LEAD IS, WHERE IT IS FOUND, WHAT HEALTH PROBLEMS IT IS ASSOCIATED WITH AND HOW IT EFFECTS CHILDREN AND ADULTS DIFFERENTLY.