NSSF on lead in hunted game
Right here, at their new blog. A CDC study shows hunters have LOWER blood lead than is average.
We found similar results here when there was a challenge to lead at a shooting range. We could show no possible migration via air or groundwater, but the laboratory (which was apparently paid to get results) theorized that, since everyone inadvertently eats a small amount of dust per day, range users might ingest it that way. We took two retirees who basically lived at the range 8-6, 7 days a week, ran their blood, and it showed up lower than normal for lead and arsenic.
My doctor friend pointed out that most lead ingestion comes from driving. Decades of leaded gas have left considerable lead dust on and near every road. These folks were spending their day at the range rather than driving around, and so were less exposed to environmental lead!