Would everyone get dementia if we lived long enough? ‘Risk factors’ focuses on the genetic, environmental, and physiological factors that makes dementia more or less likely to affect us. The media often distorts scientific findings with false correlations. We must be aware of these ourselves, particularly in relation to cause and effect; a factor that we may see as a cause of dementia might be a symptom. Risk factors include age, overall poor physical and mental health, blood sugar, blood and brain function, inflammation, and not using the brain. Many of these can be modified, even the effects of ageing, but there is no single cause or one-size-fits-all solution.