I can think of one good point of this forum section existing here: it is a good place to move certain topics / discussions into, if/when they arise - to keep them from degrading the quality of certain other sub-sections of the forum.
I'm just speculating here, but perhaps the mods (or whoever made this forum and the sections) thought about the danger that the bio-sciences or health&security forums could be overrun by all kinds of alternative therapies and related topics. By having a this sections, threads degrading the discussion can be moved away!
On the other hand, this section can reduce the need to do things that could be considered censorship; controversial topics can be discussed here, and if the topic is deemed viable at some point, the old discussion is still archived here - and can be continued or moved to a more relevant section.
(as for acupunture: it is not widely accepted by the medical community. It kind of used to be, but I believe what happened with acupuncture was publication bias; currently it seems it is probably little more effective than placebo. That being said, this IS the right section for discussion about acupuncture).