As Mick mentions in his comment, "to deem healthy" is just a little old-fashioned although not, I think, more than enough that you should not learn the way to make use of the idiom. I would not phone it "Victorian" English, as it's a phrase that sees standard use even https://how-to-take-care-of-a-cat43107.blogrelation.com/43046591/new-step-by-step-map-for-cat-grooming-uae