Game concept
Elder Health Traits
From the game's encyclopedia
As Characters grow older, they can gain age-related Traits like Faltering Heart or Fragile Bones. These normally appear around age 50, but may show up earlier.
You're less likely to get these traits if you have:
• Good Health
• Athletic, Hale, or Whole of Body
• For Withering Mind: Family Hierarch, Seducer, knowing Languages, many Friends and Lovers
You're more likely to get them if you have:
• Bad Health
• Drunkard or Reclusive
• Obese or Malnourished
• High Stress
• Parents or grandparents with the traits
The game's text for patch 1.20.1.2. Words in blue are entries of the encyclopedia: hover one to read it, as in the game.
Elder Health Traits is an entry of Crusader Kings III's in-game encyclopedia. The game explains it: "As Characters grow older, they can gain age-related Traits like Faltering Heart or Fragile Bones." It covers Mitigate Clouded Eyes, Mitigate Fragile Bones, Mitigate Withering Mind and Mitigate Infirmity. Patch 1.20.1.2, from game/common/game_concepts/00_game_concepts.txt and game/localization/english/game_concepts_l_english.yml.
Source: game/common/game_concepts/00_game_concepts.txt, game/localization/english/game_concepts_l_english.yml and the English localisation, Crusader Kings III 1.20.1.2.