1. Estrogen-progesterone challenge test in amenorrhea;
2. DUB ;
3. Endometriosis;
4. Dysmenorrhea;
5. Postponement of periods;
6. Premenstrual syndrome and cyclical mastalgia;
7. Idiopatic hirsutism;
8. Hormone replacement therapy;
9. Lower incidence of benign breast neoplasia;
10. Lower incidence of functional ovarian cysts , ovarian and uterine malignancy;
11. Lower incidence of ectopic pregnancy due to suppression of ovulation and reduction in incidence of pelvic inflammatory disease.