Will anal sex cause appendicitis or can it be one of the causes of anal sex. Tghis may soundfunny but I am dead serious.
Your question as written is two questions:
Will anal sex cause appendicitis?
Will appendicitis cause anal sex?
Yep, although you may indeed be dead serious, this indeed does "soundfunny"!
The answer to both is no.
So for #1, you can now go ahead with your Saturday night plans without having to worry about winding up on the surgeon's table come Monday morning for an appendectomy.
And as for #2, if you're looking for backdoor action, you'll just have to try something else.