Board Thread:Lore Discussion/@comment-30529651-20161117203555/@comment-26893431-20170827104818

CraftkingGaming25 wrote: Okay people must forget Tiber septim never fought a dragon so he could never absorb their power and life force whenever a dragon born absorbs a dragon soul their power is increased and they could possibly live longer for instance Miraak killed and absorbed the souls of hundreds of dragons in his time meaning he could have absorbed so much dragon power that he can live ALOT longer then a normal human and the last dragon born most likely kill alot of dragons so hes most likely immortal also remember he absobed miraaks soul so he is basically immortal also thye bonus question what if the last dragon born absorbed alduins soul what would happen Tiber Septim had a pet Dragon, thinking he didn't kill Dragons is extremely farfetched.

We don't know if Dragon souls increase lifespan, so saying they do isn't reliable.

Alduin's a God, you can't really kill a god as a mortal.