This popped up

That's why LCHF works so well. We weren't made for stuffing our faces with bread, cakes and such and certainly not liquid sugar. There is substantial scientific evidence that is mostly ignored. We will see a lot of very red faces when the science eventually is accepted as the dietary advice of the past decades of even half century has a scientifically very wobbly foundation, if any.

hypothalamus is acted on by leptin, which is controlled by insulin, which is controlled by carbs
www.youtube.com/watch?v=ceFyF9px20Y

Good clear article ! Thanks for the link

Signy