Brain health and dementia Keeping your brain healthy Research shows that a healthy lifestyle can help to protect you from cognitive decline. Dementia Dementia is an umbrella term used to describe a collection of symptoms that occur when brain cells stop working properly. Taking care of yourself if you're living with dementia Things you can do to live well with dementia or to help support a loved one. Caring for somebody living with dementia Caring for somebody who has dementia can be rewarding but can also at times be very challenging. Research Find out how you can join a research study, whether or not you have a dementia diagnosis. Dementia Friends The Dementia Friends campaign is being run by Public Health England and the Alzheimer’s Society. Additional support and advice Support and advice to help you self-care and manage your brain health or dementia, or help support a loved one