New Scientific Evidence and Public Health Imperatives

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Abstract
The two articles in this issue of the Journal on occupational exposure to benzene1 and prenatal exposure to lead2 confirm the suspicion that very low levels of toxins are capable of causing serious health effects. These impressive studies should quiet the insistence that governmental efforts to control these hazards are excessive and irrational responses to chemophobic social forces. Furthermore, the investigations should make us appreciate the difficulty of reconstructing past exposures to suspected agents in retrospective cohort studies and the value of follow-up, however burdensome, in prospective studies.These investigations are relevant in terms of regulating exposure to benzene and . . .

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