Thanks for your description. But why isn´t it?

In my head it´s like sunflower seeds are healthy but the oil out of it isn´t.

I mean the bad way how most of the companys produce it is really bad and it makes sence that this is crap. But same with butter wraped in plastic and made out of milk from unhealthy cows.

But let´s say you grow your own sunflowers in your garden and press the oil out of it by yourself. And then you cook it not to hot.

Isn´t it then still healthy?

Which piece of the puzzle did i miss?