Those are interesting possibilities, but they seem crippled by the underlying failure to calibrate or prove the assay.
It's possible there's prior lit here and I'm just not seeing the reference, but it looks like there's no claim that these changes are sweetener-specific. Without that I don't think it's a viable environmental test.
The correlation with prior toxicity work is more promising since this looks like a relatively easy test, but I still have some questions about how robust that correlation is to changing substances and dosages.
It's possible there's prior lit here and I'm just not seeing the reference, but it looks like there's no claim that these changes are sweetener-specific. Without that I don't think it's a viable environmental test.
The correlation with prior toxicity work is more promising since this looks like a relatively easy test, but I still have some questions about how robust that correlation is to changing substances and dosages.