A new study led by epidemiologists at Brown University found that among firearm owners, less safe storage was associated with higher blood lead levels in children.
I think a causal relationship can be inferred, based on the proposed mechanism: firearms tend to have lead dust on them, and failing to properly store firearms tends to lead to cross contamination with living spaces, especially carpets and the floor where babies crawl and put things in their mouth.
The next step should be to investigate a link between safe storage practices and environmental lead content in the home: in the carpets, etc.
I think a causal relationship can be inferred, based on the proposed mechanism: firearms tend to have lead dust on them, and failing to properly store firearms tends to lead to cross contamination with living spaces, especially carpets and the floor where babies crawl and put things in their mouth.
The next step should be to investigate a link between safe storage practices and environmental lead content in the home: in the carpets, etc.