My personal problem has been with low supply and underactive letdown. In my search for help I eventually tried acupuncture.
It has only been 48 hours since the second treatment so I'm not drawing final conclusions about the effect on my overall supply. However, I do think it helped a lot with let down and flow, before treatments my Right breast tended to feel congested and was usually painful to nurse even though it has the most supply. Now it seems to flow much better and sometimes is even still normal shaped right after nursing (used to always get compressed before.)
Anyway, I have the feeling that acupuncture may be of even more use to women with recurring plug problems or mastitis (in conjunction with antibiotics) and possibly OALD though I'm less sure about that last bit.