Immunity to Metabolic Hazards and vices

[Kromm]

Noxious effects only, defined as being ones that cause afflictions (pp. B428-429 and temporary disadvantages), FP loss, and/or HP loss. If some miracle drug cures cancer, grants 10 bonus HP, and gives you Mind Reading, but also lowers your ST to 1 and causes Paranoia, you simply don't suffer the ST loss or Paranoia. When ItMH occurs as part of the Machine meta-trait, of course, none of the effects apply, as "machine" is a different metabolism from "meat." Meta-traits can shift your entire class of being as a zero-cost feature, and this tends to be a red herring when trying to decipher ItMH. Nearly all metabolic hazards target a specific class of metabolisms by default; you can be immune to one for a different metabolism at zero cost. For instance, I've never experienced ill health effects from computer viruses.