[twawaaay]

None? There is nothing actionable here.

We already know PFAS are dangerous for other reasons and the war against them is warming up.

And policy is not/should not be made based on just one study. Sadly, there are too many contradicting studies. Things like this need to be re-checked so that policymakers and societies don't waste time chasing things that don't bring any results.

Even then, we need to understand what is magnitude of this effect, what level of PFAS translate to what increase in obesity risk, etc. Then put it in context of already planned PFAS reductions.

Then if I was policymaker I would also look at what are potential projects we are not working on and where are highest return on investments. Just because there is something you can fix doesn't mean you should fix it. There might be another thing with more ROI where you should be spending your efforts.

That is assuming the conclusions of this study are correct, which I don't believe they are.