Table 1.
Secondary Causes of Osteoporosis Found
| Secondary cause | Number affected | % of total (n = 61)a |
|---|---|---|
| Idiopathic—no cause found | 24 | 39 |
| History of amenorrhea > 6 months | 21 | 34 |
| Anorexia nervosa | 10 | |
| Depot medroxyprogesterone acetate | 2 | |
| Medications to suppress pituitary function | 1 | |
| Glucocorticoid exposure | 8 | 13 |
| Rheumatologic disease | 3 | |
| Organ transplant (liver, lung, kidney) | 3 | |
| Celiac disease (based on serologic study) | 6 | 10 |
| Medications to suppress pituitary function (<6 months) | 1 | 2 |
| Hyperparathyroidism | 3 | 5 |
| Seizure medication use | 2 | 3 |
| Hyperthyroidism | 1 | 2 |
| Hereditary exostosis | 1 | 2 |
a
Percent of total is >100%. Many women had more than one secondary cause (e.g., some women with celiac disease or glucocorticoid exposure also had amenorrhea).