Plastic cutting boards are mostly just plain undyed polyethylene (HDPE)- which is just a fully saturated perfectly straight hydrocarbon, similar to saturated fat or wax and lacks the kind of reactive functional groups that make other plastic polymers toxic. I think it is quite unlikely that HDPE in particular is toxic or endocrine disrupting to humans in the way a lot of other plastics seem to be.
It's also basically just a very viscous fluid and I suspect would flow into grooves when a knife blade hits it, without releasing particles like harder more solid plastics would.
Personally, I try to avoid having most plastics contact my food and water, but make an exception for HDPE.
In general, each plastic polymer is very different from another chemically, and it makes sense to consider their safety independently, and not group all plastics together.
It's also basically just a very viscous fluid and I suspect would flow into grooves when a knife blade hits it, without releasing particles like harder more solid plastics would.
Personally, I try to avoid having most plastics contact my food and water, but make an exception for HDPE.
In general, each plastic polymer is very different from another chemically, and it makes sense to consider their safety independently, and not group all plastics together.