Pulmonary surfactant, secreted via exocytosis of lamellar bodies (LB) by alveolar type II (AT II) cells, maintains low alveolar surface tension and is therefore essential for normal lung function.
This in turn causes abnormalities in the levels of the other hormones, Estrogen and Progesterone, thus adding to the chemical turmoil in the body. The common causes of Anovulatory Cycles include: Polycystic Ovarian Disease (PCOD). Hyperprolactinaemia (increased blood levels of the hormone Prolactin).
Also, if your cycles fall within the normal 21-36 day range, but the length of each cycle varies widely from one cycle to the next (meaning you might have a 22-day cycle one month, but a 35-day cycle the next), this could also be a sign of anovulation.