According to the article, this scientist and the doctor caring for the patients think it's environmental, possibly Roundup related.
> But in the leaked email, [Coulthart] wrote that he believes an “environmental exposure – or a combination of exposures – is triggering and/or accelerating a variety of neurodegenerative syndromes”
> Coulthart’s email emerged more than a year after [neurologist] Marrero pleaded with the Canadian government to carry out environmental testing he believed would show the involvement of glyphosate.
NB gov is just typically very secretive for no reason...
But also the province is joked to be essentially a fiefdom of the Irving family, for better or worse.
> But in the leaked email, [Coulthart] wrote that he believes an “environmental exposure – or a combination of exposures – is triggering and/or accelerating a variety of neurodegenerative syndromes”
> Coulthart’s email emerged more than a year after [neurologist] Marrero pleaded with the Canadian government to carry out environmental testing he believed would show the involvement of glyphosate.