insalutary vs unhealthy

insalutary

adj
  • Not salutary or wholesome; bad for health. 

  • Not tending to safety; productive of evil. 

unhealthy

adj
  • characterized by, or conducive to poor health 

  • characterized by disturbed mental health 

  • tending to corrupt 

  • sick or ill 

How often have the words insalutary and unhealthy occurred in a corpus of books? (source: Google Ngram Viewer )