<prompt> Which of the following is role of progestogens?Inhibits ovulationProtects against endometrial cancerCauses prompt withdrawal bleedingAll  <response>: Ans. d. All. Ref. Williams Obstetrics - 21st ed., - 1531; KD Tripathi 5th1- 282, 283PROGESTINS Progestin is weak inhibitor of GH secretion from pituitary, decrease frequency of LH pulses prevents ovulation. Progestin is palliative in about 50 cases of advanced Ca endometrium. It is used as prophylaxis for prevention of Ca endometrium. Irregular bleedingamenorrhea can occur, if progestin is given continuously. Progesterone only pills are ideal contraceptive in sickle cell disease. 