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What I didn’t focus on was a study published earlier this year in the journal Nature Medicine that raised concerns about polyol sweeteners such as erythritol.

The Nature Medicine study looked at blood levels of polyol sweeteners in 1,157 people with risk factors for heart disease, including type 2 diabetes.

While much work has gone into finding replacements for the polyol component of polyurethane foams, the isocyanate component has largely remained, despite its consequences for human health.

You wouldn’t think I’d be the type of person to find psychic relief in the intricacies of the urethane polyether polyol trade, but I did.

A life-cycle analysis shows that the process reduces greenhouse gas emissions by 19% relative to conventional polyol production, and consumes up to 16% less fossil fuel—big gains in an industry where every percentage point is hard won.