Quick question about "old age"

[Actuarian]

Both nature and death magic positively affect aging. Nature increases the maximum age and death reduces the chance of getting aging effects. Someone ran an old age simulation a few months back (November?) and posted detailed results.

Similarly someone had a thread a few months back detailing inconsistencies in relative starting old age.

I'm don't know about the fire magic.

[Jack_Trowell]

For a normal human (old age 50), each rank of nature add 25 years to his lifespan (maybe it's +50% per nature rank ?).

Death magic does not change the age you turn "old", but it is supposed to (greatly ?) descrease the chance of affliction.

[Edi]

Yes, nature magic gives +50% of default old age per point, but I am not interested in that. I need the fire magic mechanics.

Edi