As Mick mentions in his remark, "to deem healthy" is a little old-fashioned although not, I feel, more than enough that you mustn't learn how to make use of the idiom. I would not call it "Victorian" English, as it's a phrase that sees regular use even these days. At https://affordablelawyerindhakara19108.blogolize.com/lawyer-in-dha-can-be-fun-for-anyone-75536983