Too Scanty and Spaced-out (oligomenorrhea)

  • An overactive thyroid function (hyperthyroidism) or certain kidney diseases can both cause hypomenorrhea. Oral contraceptive pills can also cause hypomenorrhea. It is important for women to know that lighter, shorter, or even absent menstrual periods as a result of taking oral contraceptive pills does not indicate that the contraceptive effect of the oral contraceptive pills is inadequate. In fact, many women appreciate this "side effect" of oral contraceptives.