DAVID WOODFALL IMAGES / SCIENCE PHOTO LIBRARY DAVID WOODFALL IMAGES / SCIENCE PHOTO LIBRARY
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Alzheimer's patient. Woman with Alzheimer's disease in a care home. This neurodegenerative disease is a common cause of dementia in the elderly. It is caused by the formation of protein plaques in the brain. The symptoms include memory loss, personality changes and confusion. Photographed in the Bron y Graig care home, Wales.
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