Full adaptation brings remarkable benefits, including increased sensory perception, rapid tissue regeneration and a vastly prolonged life expectancy, but it renders all hosts sterile, and eventually causes severe memory loss, paranoia and dementia. Even after full adaptation with the symbiont, mining Ballybran crystal is a dangerous occupation. Beside the risks associated with other mining operations, there are frequent storms with high winds that may cause crystal deposits to resonate: "sonic storms" that may impair the symbiont and drive the singer mad.