Main findings
In this monocentric, observational, longitudinal and retrospective study, H2S exposure during pregnancy was associated with accelerated onset of preeclampsia between the 20th and 37th week of amenorrhea in women living and/or working in the Atlantic coastlines of Martinique. This finding is consistent with previous studies in industrial and geothermic areas which have reported associations between H2S exposure and cardiovascular diseases, but conflict the great number of studies suggesting cardioprotective action of H2S.