Board Thread:WARNING ALL USERS False Info\Spoilers/@comment-845740-20130819130916/@comment-6207588-20130819195609

Adiman83 wrote: . And we know for sure the Teen Wolf werewolves are not immortal, they age pretty much at a more or less normal rate and they're not THAT difficult to kill.

They have been specificly vague about how they age...one of the spoilers said that Derek was not 24 and in the conversation that Stiles has with Peter in Visionary he asks how old they are

transcript:

Stiles: Okay, so if Derek was a sophomore back then, how old was he? How old were you? How old are you now?

Peter: Not as young as we could have been, but not as old as you might think.

Stiles: Okay, that was frustratingly vague.

How old are you?

Cora: - I'm 17.

Stiles :- See, that's an answer.

That's how we answer people.

Cora: Well, 17 how you'd measure in years.

Stiles: All right, I'm just gonna drop it.

and later on in the episode young Peter tells young Derek when he is trying to convince him to get Paige the bite:

One little bite, and she never gets sick again.

She stays younger, more beautiful.

Think how she'll be able to protect herself.

Derek The bite is a gift.

I would think the line "she stays younger" indicates that they age at a slower rate. Just my opinion.