Association between blood lead levels and consumption of wild game

Background: Wild game hunting is a popular activity in many regions of the United States. Recently, presence of lead fragments in wild game meat, presumably from the bullets used for hunting, raised concerns about health risks from meat consumption. This study examined the association between blood lead levels (PbB) and wild game consumption.

Methods: We recruited 740 participants, aged 2–92 years, from six North Dakota cities. Blood samples were collected from 736 persons. Information on socio-demographic background, housing, lead exposure source, and types of wild game consumption (i.e., venison, other game such as elk, birds) was also collected. Generalized Estimating Equations (GEE) were used to determine the association between PbB and wild game consumption.

Results: Most participants reported consuming wild game (80.8%) obtained from hunting (98.8%). The geometric mean PbB were 1.27μg/dl and 0.84μg/dl among persons who did and did not consume wild game, respectively. After adjusting for potential confounders, the average PbB among persons who consumed wild game was 0.30μg/dl (95% confidence interval: 0.16–0.44μg/dl) higher than that among persons who did not. For all game types, recent (<1 month) wild game consumption was associated with higher PbB. PbB was also higher among those who consumed a larger serving size (³2 oz vs. <2 oz); this association was significant for other game consumption only.

Conclusions: Participants who consumed wild game had higher PbB compared to those who did not consume wild game. Careful review of cleaning practices and monitoring of meat packing processes may mitigate this risk.