Board Thread:Lore Discussion/@comment-142.167.98.9-20130810075540/@comment-9887604-20130811024155

You could become a dragon priest, they have a symbiotic relationship with the draugr that makes them immortal.

If you could happen to get your hands on the heart of Lorkhan you could use that to possibly turn yourself immortal, or into dust.

Or you could realize CHIM

If you happened to be an Argonian your soul never really dies, it gets recycled through the Hist into a new body.

On Miraaks aging, it has less to do with Hermeaus Mora and more to do with being trapped in Oblivion for a very long time.