Editing Multiple chemical sensitivity (section)

=== Genetic ===
It has been hypothesized that there is a heritable [[genetic trait]] which pre-disposes people to be hypersensitive to low-level chemical exposure and so develop MCS. To investigate, researchers compared the [[genotype|genetic makeup]] of people with MCS, to people without. The results were generally inconclusive and contradictory, thus failing to support the hypothesis.<ref name=quebec-synth/>

Gaétan Carrier and colleagues write that the genetic hypothesis appears implausible when the evidence around it is judged by the [[Bradford Hill criteria]].<ref name=quebec-synth/>