The prevalence of HCh and DM did not show any sex-related differences.

There were statistically significant positive relationships between the contents of HCHs and total organic carbon.

The HCH site is influenced by the domestic activities like vehicular emission, construction, and biomass burning.

This is the first report on the metabolic dechlorination of beta-HCH by a defined anaerobic bacterial culture.

Participants included 244 patients with HCH and 251 healthy controls from our rehabilitation department.