[ufo]

This kind of thing can happen even if the search engine doesn't optimize for engagement. If we search for something that the alternative medicine people talk about much more often than the reputable sources do then naturally many of the top search results will be from the alternative medicine crowd.

I've noticed this kind of thing happening for search terms related to thyroid hormone testing. For example, if you search for "thyroxine"[1] the top search results are from reputable sources such as the Endorcine Society or WebMD. However, if you search for "reverse T3"[2] -- an esoteric test favored by the alternative medicine crowd -- then most of the top results are from naturopaths, herbal supplement peddlers, etc.

[1] https://duckduckgo.com/?q=thyroxine [2] https://duckduckgo.com/?q=reverse+T3