The "ill" status effect is inflicted when you fight sewage eels in Golgatha.  If you see a red message in the message buffer saying that the sludge splashes into your mouth and that you gag, then that meens you've become ill.

While you're ill, you don't heal naturally, even if you have the regeneration mutation.  The condition seems to abate over time, or at least it did on my character with regeneration.

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.