As Mick mentions in his comment, "to deem healthy" is a little previous-fashioned but not, I do think, sufficient that you shouldn't find out how to make use of the idiom. I would not contact it "Victorian" English, as it is a phrase that sees regular use even today. " https://wodirectory.com/listings13294670/the-best-side-of-skin-allergy-homeopathy-ahmedabad