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INTRODUCTION: Benzodiazepine use has been associated with increased risk of dementia. However, it remains unclear whether the risk relates to short or long half-life benzodiazepines and whether it extends to other psychotropic drugs. METHODS: Prospective cohort study among 8240 individuals ≥65, interviewed on medication use. Incident dementia confirmed by an end point committee after a multistep procedure. RESULTS: During a mean of 8 years of follow-up, 830 incident dementia cases were observed. Users of benzodiazepines at baseline had a 10% increased risk of dementia (adjusted hazard ratio HR, 1.10; 95% confidence interval, 0.90-1.34). However, long half-life (>20 hours) benzodiazepine users had a marked increased risk of dementia (HR = 1.62; 1.11-2.37) compared with short half-life users (HR = 1.05; 0.85-1.30). Users of psychotropics had an increased risk of dementia (HR = 1.47; 1.16-1.86). DISCUSSION: Results of this large, prospective study show increased risk of dementia for long half-life benzodiazepine and psychotropic use.
Shash et al. (Wed,) studied this question.
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