From Valley News Live:

_In March, North Dakota officials advised food pantries not to distribute ground venison, after it was discovered to be contaminated with lead fragments from bullets.

Now, officials are conducting a study with your help to determine if lead fragments in venison are really putting people at risk. So far 250 people across North Dakota have volunteered for the study. In all, 628 are needed, especially more non-venison eaters. Officials say even a low level of lead in your blood can cause numerous health problems._