The Guardian | Study suggests sleeping drugs can increase risk of Alzheimer's The Guardian Each of these drugs has “anticholinergic” blocking effects on the nervous system that are said – at higher doses – to raise the likelihood of developing Alzheimer's and other forms of dementia significantly over several years. Other drugs on the risk ... Over-the-counter sleep aids linked to dementia Common Drugs Linked to Increased Risk of Dementia, Alzheimer's Media dementia scare over hay fever and sleep drugs |