I think the answer is a bit more complex than "yes it works" or "no it doesn't". The truth is probably more like "it depends". Here's my experience with acupuncture to date.
First, let's be clear that I used to be dubious about acupuncture until some years ago, when I'd injured my back in a way that specialist sports doctors (trained in Western medicine) could not diagnosis nor treat. They'd poked around my back and had literally said, "I can see something something's not right with it, but I'm not sure what". I was obviously disheartened by this because the condition was a bother. Not debilitating, but it made the simplest of movements impossible (imagine being forever unable to arch your back because when I did that, there'd be a sharp, intense pain that bolted up my spine which would snap me right back. This made it impossible to stretch as I did something as simple as yawn, because the pain was just unbearable.
Out of desperation (and two years of pain and time spent hoping that perhaps my back would mend itself, as the body sometimes does), I tried acupuncture to see if it might help. I was wary that I'd be told the same thing as the other doctors (that the condition was mysterious and incurable), but the acupuncturist barely batted an eye when I described how I'd gotten the injury and gave her diagnosis (nerve damage). She prescribed 12 sessions of acupuncture, which I went through with. Unbelievably, that shooting pain in my back has never come back and I have full mobility. This is huge, especially because I love being active/sports and living with that condition would've been really limiting.
That's when I realised perhaps acupuncture has its value, in ways that Western medicine doesn't fully understand.
Fast forward to this year, when my partner and I decided we need IVF help after we were told we have "unexplained infertility". We've been on the mild IVF protocol and we've been seeing a fertility acupuncturist for two months (mainly me, as egg quality is key in fertility success as you probably know).
Here're the results we've seen so far: after the mild IVF protocol, they were able to collect 7 eggs that were sufficiently large to undergo fertilisation (there was an 8th, but it was too close to a blood vessel so they thought they'd not take the risk and left it in place). Seven eggs on a mild protocol is not too bad at all. And I felt WAY better than I'd previously been when I had gone for egg freezing and was put on the standard IVF protocol, which made me feel like a beached and bloated whale right before egg collection.
Anyway, of these 7 eggs, five had fertilised by d+3 (3 days after collection). The big question was, how many of these embryos would make it to blastocyst stage (d+5) and be good enough for transfer/freezing? Now, the statistic for survival from d+3 to blastocyst is somewhere around 40% (I've heard 30%-50%). So those percentages, I should have had 2 embryos by that stage, and I was thinking I'd be happy if 3 made it.
Guess how many actually made it in the end? 100%. All 5 of them made it, and the best one was rated by the embryologist as a Grade 5AA embryo (5 being the highest number in my clinic's rating system, and A being exactly what you think). In other words, top shelf stuff.
I don't think my body would have been capable of churning out those percentages on its own; I think the fact that I'd been working with an excellent acupuncturist whose speciality is in fertility made a huge difference.
I know for most people, acupuncture is still too "woowoo", but the science behind fertility acupuncture (for women) is, simplistically put, to encourage blood circulation to the right organs at the right time so that you can first produce high quality eggs and them have a healthy, stable pregnancy. Do I think it's the silver bullet to infertility problems? No. Do I think it can help you on your IVF journey? Yes.
Now, granted the above are just the results from one person (so it's anecdotal at best). Plus, I'm still pupo so it's too soon to celebrate in any way, but . But I am happy with the results so far, and the fact that 100% of the eggs that fertilised were good enough to freeze or be used as part of a fresh transfer - that I can't complain about.
I hope that provides some more context to a rather controversial topic. And as someone who's body had once been in great pain and saw real, lasting results via acupuncture, and as a hopeful mum now, I would not be so quick to dismiss the power of acupuncture.