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Bone density and antiepileptic drugs: a case-controlled study
L J Stephen1, A R McLellan, J H Harrison
1Epilepsy Unit, University Department of Medicine and Therapeutics, Western Infirmary, Glasgow, Scotland, UK.
Seizure
|October 8, 1999
Summary
Long-term antiepileptic drug (AED) treatment in older adults with epilepsy is linked to reduced bone mineral density (BMD), increasing osteoporosis risk. Regular bone density screening is recommended for these patients.
Area of Science:
- Gerontology
- Neurology
- Endocrinology
Background:
- Epilepsy affects a significant portion of the aging population.
- Long-term use of antiepileptic drugs (AEDs) is common in managing epilepsy.
- Potential adverse effects of AEDs on bone health are a growing concern in older adults.
Purpose of the Study:
- To investigate the association between bone mineral density (BMD) and long-term antiepileptic drug (AED) treatment in elderly individuals with epilepsy.
- To compare BMD in epileptic patients on AEDs with a drug-naive control group.
- To identify if AED type or treatment duration influences bone density reduction.
Main Methods:
- A case-controlled study design was employed.
- Seventy-eight adult epilepsy patients (aged 47-76) on AEDs were matched with drug-naive controls.
- Bone densitometry (lumbar spine, femoral neck) and biochemical bone markers were assessed.
Main Results:
- Male patients exhibited significantly lower BMD at both the lumbar spine and femoral neck compared to controls.
- Female patients showed reduced BMD only at the femoral neck.
- AED use was an independent risk factor for reduced BMD at femoral sites, explaining over 5% of variance at the femoral neck.
Conclusions:
- Long-term antiepileptic drug therapy is an independent risk factor for diminished bone mineral density in epilepsy patients.
- Adults undergoing epilepsy treatment face an elevated risk of osteoporosis.
- Routine bone densitometry screening is advised for individuals on long-term AEDs.