<prompt> Osteoporosis is seen in :ThyrotoxicosisCushings diseaseMenopauseAll of the above  <response>: Answer is D All of the above : Estrogen deficiency Hypogonadal state is known to cause osteoporosis. The most frequent estrogen deficient state is the cessation of ovarian function at the time of menopause. Thyrotoxicosis and Cushings syndrome are known endocrine causes of osteoporosis. 