Headlines - Toward a New Policy for Managing Lead Exposure?

The effects of low-level lead exposure have been the subject of growing attention since the 1970s. A consensus quickly emerged regarding the particular vulnerability of children, who needed to be protected first and foremost due to more frequent hand-to-mouth contact than in adults, a greater capacity to absorb the toxin, and the effects of lead at these concentrations on neurological development.Heated discussions then ensued to define the threshold below which lead had no effects, but gradually the medical community came to accept the idea that any dose of lead had a harmful effect on children’s neuropsychological development, with the meta-analysis published by Lanphear in 2005 effectively marking the conclusion of this debate.Recent reviews conducted by the EFSA¹ , the CDC² , and the NTP³ between 2010 and 2012 have highlighted that the most significant effects associated with chronic lead exposure are neurotoxicity in young children… as well as renal toxicity and a hypertensive effect observed in adults.Following a request from the DGS in 2011, and in line with the aforementioned reviews, ANSES4 identified renal toxicity in adults and neurotoxicity in young children as particularly concerning and established a threshold of 15 μg/L of lead in the blood as a value that reasonably protects against the effects of lead in both children and adults. Given that attention has so far focused primarily on children, and that for them the intervention threshold under the program to combat childhood lead poisoning applies to blood lead levels exceeding 100 μg/L, significant changes in the management of lead exposure in France are to be expected, for both children and adults.