Evidence shows that modifying risk factors for dementia can help prevent it. Risks: less education, hearing loss, hypertension, smoking, obesity, depression, physical inactivity, diabetes, excessive alcohol consumption, traumatic brain injury, air pollution, and social isolation. New evidence shows that untreated vision loss and high LDL cholesterol are also risk factors for dementia. https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(24)01296-0/abstract