Dementia expert warns nearly half of cases could be prevented by three lifestyle changes

Professor Catherine Mummery told This Morning that around 45% of dementia cases may be preventable by modifying risk factors and highlighted three areas: regular physical exercise, mental stimulation, and a healthy diet.

A leading dementia specialist spoke on This Morning and said a substantial share of dementia is linked to modifiable risk factors. Professor Catherine Mummery reported that around 45% of dementia could be prevented by addressing those factors. She emphasised the role of vascular health and noted that heart-related risks overlap with brain risks. The discussion followed wider attention to dementia after recent reports about a young patient and public diagnosis rates. Key points: - Professor Catherine Mummery said about 45% of dementia is preventable if risk factors are modified. - She pointed to vascular factors — including blood pressure, cholesterol, diabetes and smoking — and said "what's good for your heart, is good for your brain." - The expert named three lifestyle areas linked to lower risk: regular physical exercise (she mentioned aiming for exercise three times a week that raises breathlessness), mental exercise or activities that stretch you, and a diet focused on vegetables and fresh food while avoiding processed items and excess sugar. - The Alzheimer's Society is cited as noting other risk reductions such as cutting down alcohol and smoking, and managing long-term conditions like high blood pressure and diabetes. Summary: The expert's remarks underscore links between vascular health and dementia and highlight three lifestyle areas associated with lower reported risk. Undetermined at this time.