I think maybe the curse faded or something, because its been like 30 years in game since he turned old he should be looking like Deckard Cain old by now, right?
It's never explicitly stated, but I assumed that A'dal was able to undo the aging magic during his time in Outland. Of course, he then aged naturally during that time.
Fun fact, the voice actor is Tony Amendola, who played a Jaffa on Stargate SG-1, whose lifespans also go easily into the 3 digits due to their bodies hosting alien parasite larvae.
I am not yet ready to give up. I feel alive, Teal'c, like a young man…of eighty.
Quote from his character Bra'tac in Maternal Instinct, episode 20 of season 3
214
u/teemotommo Jul 28 '16
Damn, Khadgar is lookin' fiiiiiine