EPIDEMIOLOGY OFENDOMETRIOSISNumerous reproductive influenceshave remained persistently interrelated with likelihood for endometriosis, suggestingthat hormonal disparity may have a substantial effect on the possibility ofdeveloping endometriosis.ForInstance, early age at menarche 10, 11, 12, 13, 14 and short menstrual cyclelength 13,14 are interconnected with an increased threat, while parity 13and current use of oral contraceptives 15 are related with a reduced threat.Circulating estradiol and estrone, which stimulate ectopic and eutopicendometrial tissue, are greater amongst women at an earlier age of menarche andin nulliparous women 16-20. Though not a reproductiverisk factor, a reliable inverse connection has also been witnessed amongst bodymass index (BMI) and endometriosis 10, 11–12, 14, 58, 59 and may also relate to hormonal disparities betweenheavy women and slender women.
Unfortunately, the evaluation of tubal ligation,parity, and oral contraceptive use in relation to endometriosis risk has been troubledby methodologic issues. Tubal ligation has been hypothesized to dropendometriosis possibility through hindering retrograde menstruation fromreaching the pelvic cavity. Yet, the connection between tubal ligation andendometriosis is difficult to understand since endometriosis is illustrated byinfertility, and women who seek a tubal ligation are more liable to be parousthan the overall population 21, 22.
The mean age atdiagnosis is 25–29 years, but it is often greater in women who present withinfertility rather than pelvic pain. 23 Thoughthe mechanism is undetermined, circulating estrogens are known to be lesser inwomen who smoke 37 and could impede thegrowth and persistence of endometriotic tissue. The association between alcoholand caffeine consumption is similarly mixed and may depend on fertility status.Among