Antipsychotic drugs have increasingly been used to treat the personality changes and aggression often associated with Alzheimer's disease but there have been increasing concerns about their effects on people's health. A three-year study by researchers at King's College London compared those taking antipsychotic drugs with those taking a placebo. After a year slightly more people in the antipsychotic group had died but after a year and a half survival in the placebo group was 59% compared to 30% among those taking antipsychotics. Over the course of the study the participants given the placebo were 42% less likely to die than those taking antipsychotics. Antipsychotic drugs are also linked to a higher risk of stroke and a decline in brain function.
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