healthful vs what the doctor ordered

healthful

adj
  • Beneficial to bodily health. 

  • Conducive to moral or spiritual prosperity; salutary. 

what the doctor ordered

noun
  • Exactly what is necessary or useful in a given situation; something very beneficial or desirable. 

How often have the words healthful and what the doctor ordered occurred in a corpus of books? (source: Google Ngram Viewer )