http://www.telegraph.co.uk/health/h...s-taken-by-millions-linked-to-Alzheimers.html "Common sleeping tablets and anxiety drugs taken by millions of patients has been linked to a 50 per cent increased risk of Alzheimer's disease, researchers have found. Taking the drugs known as benzodiazepines, which include diazepam and lorazepam, for three months or more was linked with a greater chance of being diagnosed with Alzheimer's disease five years later. At least six million prescriptions were issued for the drugs in England last year and the researchers said the findings are important because of the large numbers of older people taking the medicines. Researchers behind the study described the findings as being of "major importance for public health". They warned that although it cannot be definitively proven that the drugs are causing Alzheimer's there is a strong 'suspicion of possible direct causation'. The drugs should be not be taken for more than three months in light of these findings, the researchers said."