It's a poisoning largely blamed on old paint, and the government is opening the doors for more cases of lead poisoning to be acknowledged, changing its standards for the first time in decades.

FOX News Radio's Lilian Woo reports:

U.S. health officials, making a change that means many more children could be diagnosed with high levels of lead in their blood.  For the first time in 20 years, the Centers for Disease Control & Prevention, announcing it's lowering the threshold for lead poisoning in young children, but also saying they don't have more money to help doctors or local health departments test kids or track down the source of any lead contamination, which most young children get from paint chips or dust in older homes with lead paint.  

Too much lead is harmful to developing brains, and can mean a lower I.Q.

Lilian Woo, FOX News Radio.