A new study challenges the widespread belief that moderate alcohol consumption is harmless, revealing that even a single drink can negatively impact brain health. Dementia, which includes conditions like Alzheimer's disease, is linked to gradual declines in memory, thinking, and daily functioning. The World Health Organization has reiterated that no amount of alcohol is safe, as risks to the brain and other body systems begin with the very first drink. The notion of 'healthy drinking' is described as a myth, with evidence showing that any alcohol intake can contribute to cognitive decline and serious illness.