Game concept
Health Trait
From the game's encyclopedia
A Health Trait is a Trait that directly affects one's physical and mental Health, such as Diseases. Temporary traits that affect one's bodily capabilities, such as pregnancies and wounds also falls under this category.
Old Characters may gain Elder 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.
Health Trait is an entry of Crusader Kings III's in-game encyclopedia. The game explains it: "A Health Trait is a Trait that directly affects one's physical and mental Health, such as Diseases." It is part of Trait. 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.