Why there are not much research on PCOS and there is no treatment available for it?
Life style management is the only way for betterment of regular menstrual cycle since it involves both hormone and system.weight loss,healthy diet,reg exercise can do it.Surgery is opted when these are helpless.Evenugh you clear the cyst with laparoscopic ovarian drilling and ovarian wedge resection there's highest possible chance of damaging ovary and the cyst eventually reoccurs.
PCOS has no definitive treatment, but forms of hormonal birth control can be used to regulate the formation of the cysts. In some cases, hormonal therapy works better than others of course, but it’s a new frontier for managing PCOS. As far as research, it’s difficult to find individuals willing to subject themselves to controlled studies/treatments, as well as it being a more recently discovered syndrome. Hopefully more to come...in time