Constitution measures a creature's overall health and well-being. Given the impact of Constitution on the resilience of your character, it’s recommended you don’t lower it too much, unless you’re planning to be able to defend yourself otherwise through magical means. The effect of many consumables is also dependent on the Constitution of the user.
The following schools are affected by the Constitution of the user to determine the effects of the skills:
Base = 0 for Human players, but can vary depending on creature type.
The chance to avoid an effect through Fortitude is:
Health base value is 750. Each point of Constitution increases this amount by 75.