BLL is blood lead level.
January 21, 2016
By Frostenson
The city of Flint, Michigan, (click here) is in the midst of a terrible and ightly shocking lead poisoning crisis. The number of kids testing positive for elevated lead levels in their bloodstreams has doubled in the past few years, after the city switched to a new, cheaper water source.
This is an extreme case, but the problem of lead exposure among children is not a local Flint story. If you look at public health data, you begin to realize two things. The first is that it's actually really hard to get good data on which kids do and don't experience lead exposure, and which parents should worry about the issue.
