I think that consent is irrelevant and if you can use it for food it is OK (they are dead and cannot consent, and also the other plants/animals you also don't u

I think that consent is irrelevant and if you can use it for food it is OK (they are dead and cannot consent, and also the other plants/animals you also don't usually consent either). The dead body (human or otherwise) is for eating (whether by human or others animals) and for recycling. That is how to do the nature, and it is good. However, Kuru is good point; since it is not good to eat, so, don't eat, please (another comment mentions other kind of disease too). There is valid reason to be careful due to such thing. It is also contrary to the English cultural that I know, I think.