Definitions and Prevalence
Osteopenia and osteoporosis are very common conditions
Today it is estimated that 34 million Americans have osteopenia and are at significant risk of developing osteoporosis.1
- 10 million Americans have osteoporosis1
The National Osteoporosis Foundation has predicted that these estimates will continue to rise, and by 2020:
- 47 million Americans will have osteopenia and will be at significant risk of developing osteoporosis2
- 14 million Americans will have osteoporosis2
The condition usually affects females significantly more than males.
How is osteoporosis usually defined?
- Osteoporosis is a skeletal disease characterized by a decrease in bone mass and bone density and an increased risk and/or incidence of fracture
- Fracture risk similar for young or old; a postmenopausal women study identified that relative risk for osteoporotic fracture was 1.5 for each standard deviation (SD) decrease in bone mineral density (BMD) for both younger (age 50-64) and older (65+) women3
- BMD score > -2.5 SD below T-score norm4
- Osteoporosis literally means "porous bone"
How is osteopenia usually defined?
- Osteopenia is a condition that results in a significant decrease in bone density but not necessarily an increase in the risk or incidence of fracture
- BMD score from -1.0 to -2.5 SD below T-score norm4
- Decrease in bone density less severe than osteoporosis4
- Considered a clinical precursor to osteoporosis4
“Low BMD in younger postmenopausal women 50-64 years of age showed a 1-year relative risk of fracture similar to that found in woman ≥65 years of age”4