PTH and polycystic ovary syndrome: It has been recommended that a fusion of vitamin D insufficiency and dietary calcium deficit might well be primarily accountable for the menstrual anomalies affiliated with PCOS (Akbari et al., 2018); moreover, it has also been proposed that vitamin D adequacy is more essential than elevated calcium ingestion in sustaining preferred PTH levels (Steingrimsdottir et al., 2005).