All are causes of Osteoporosis, except-

Causes of osteoporosis are : * Lifestyle factors * Risk increases with age * Genetic factors * Hypogonadal states * Endocrine disorders - premature ovarian failure, adrenal insufficiency, Cushing's syndrome, central adiposity, Diabetes mellitus (types 1 and 2), hyperparathyroidism, thyrotoxicosis. * Gastrointestinal disorders * Hematologic disorders * Rheumatologic and autoimmune diseases * Central nervous system disorders * Miscellaneous conditions and diseases like AIDS/HIV, alcoholism, amyloidosis * Medications - aluminum (in antacids), Anticoagulants (heparin), Anticonvulsants, Aromatase inhibitors, Barbiturates, Glucocoicoids , GnRH antagonists and agonists, Cancer chemotherapeutic drugs, Lithium, Cyclosporine A and tacrolimus, Depomedroxyprogesterone (premenopausal contraception), Proton pump inhibitors, SSRIs, Tamoxifen (premenopausal use), Thiazolidinediones, Thyroid hormones (in excess), Parenteral nutrition. Reference : page 2490 Harrison's Principles of Internal Medicine 19th edition