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Scanning Skeletal Remains for Bone Mineral Density in Forensic Contexts
Published on: January 29, 2018
Bone mass in young adults with Down syndrome
M Guijarro1, C Valero, B Paule
1Department of Internal Medicine, Hospital U.M. Valdecilla, University of Cantabria, Santander, Spain.
Journal of Intellectual Disability Research : JIDR
|February 12, 2008
Summary
Young adults with Down syndrome (DS) have lower bone mineral density (BMD), partly due to smaller body size. Promoting physical activity and sunlight exposure can help improve bone health in individuals with DS.
Area of Science:
- Endocrinology
- Bone Metabolism
- Genetics
Background:
- Down syndrome (DS) is a primary cause of intellectual disability.
- Increased life expectancy in DS raises concerns about osteoporosis risk.
- Previous studies indicate reduced bone mass in DS, but results are often confounded.
Purpose of the Study:
- To investigate anthropometric and lifestyle factors affecting bone mineral density (BMD) in young adults with DS.
- To differentiate the impact of body size from other factors on BMD in DS.
- To identify modifiable factors for improving bone health in DS.
Main Methods:
- Compared 39 young adults with DS (mean age 26) to 78 controls.
- Measured areal BMD using dual-energy X-ray absorptiometry (DXA).
- Estimated volumetric BMD at the lumbar spine and femoral neck using established formulas.
Main Results:
- DS patients exhibited lower areal BMD across all measured regions (spine, hip, total body).
- DS patients were shorter with smaller bone areas.
- Lower spine volumetric BMD in DS was linked to DS itself, male sex, low physical activity, and reduced sunlight exposure.
Conclusions:
- Reduced areal BMD in DS is partly explained by smaller body size, especially at the femoral neck.
- Volumetric BMD is influenced by physical activity and sunlight exposure in DS patients.
- Encouraging physical activity and adequate sunlight exposure is recommended to maintain bone mass in individuals with Down syndrome.
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