In Reply In their Letter in response to our Original Investigation,1 Fuller-Thompson and Munro provide an interesting insight that improvements in environmental factors, specifically the phase out of leaded gasoline, could have contributed to the reduction in hip fractures observed in the United States and Canada. The role of lead is biologically plausible and important for the future: lead paint continues to be a source of lead exposure in Massachusetts and the rest of the United States.
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Bhattacharyya T, Hannan MT, Kiel DP. Factors Associated With the Declining Trends of Hip Fractures—Reply. JAMA Intern Med. 2021;181(2):296. doi:10.1001/jamainternmed.2020.6474
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