<prompt> Translate the following text to EnglishNa kwa kuwa ugonjwa wa mzio hauwezi kupunguza muda wa kuishi au kuondoa tamaa ya kuwa na wenzi, ni vigumu kwa uteuzi wa asili kuondoa ugonjwa huo.  <response>: And since allergies rarely shorten life spans or discourage mates, it is unlikely natural selection will ever weed them out. 