Many divide risk factors for<unk>  into fixed (non-changeable) and modifiable factors.<unk>  can also be secondary to other diseases. An incomplete list of risk factors:'Bone density peaks at 35 and then decreases with age. Fixed * Age: bone density peaks at age 35, and then decreases. Bone density loss occurs in both men and women * Ethnicity: European and Asian people have increased risk * Sex: women are at higher risk, particularly those with early menopause * Family history: low bone mass in the family increases risk Modifiable / behavioral * Tobacco use * Alcohol use * Inactivity – particularly lack of weight-bearing or resistance activities * Insufficient caloric intake –<unk>  can be connected to female athlete triad syndrome, which occurs in female athletes as a combination of energy deficiency, menstrual irregularities, and low bone mineral density. * Low nutrient diet (particularly calcium, Vitamin D) Other diseases * Celiac disease, via poor absorption of calcium and vitamin D * Hyperthyroidism * Anorexia nervosa Medications * Steroids * Anticonvulsants
Osteopenia
Basopenia
Osteodystrophy
Trichomegaly
Osteomalacia
Osteopathy
Osteopoikilosis
Pancytopenia