Individuals struggling with unnatural appetites and weak moral power benefit from relocation to purer environments away from urban temptations.

Original passage

And for those who are weak in moral power, the cities abound in dangers. In them, patients who have unnatural appetites to overcome are continually exposed to temptation. They need to be placed amid new surroundings where the current of their thoughts will be changed; they need to be placed under influences wholly different from those that have wrecked their lives. Let them for a season be removed from those influences that lead away from God, into a purer atmosphere.