Osteoporosis is seen in :
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 Cushing's syndrome are known endocrine causes of osteoporosis.
Thyrotoxicosis
Cushing's disease
Menopause
All of the above