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Which brain structure is involved in dementia?

According to the World Health Organization, over 55 million people live with dementia worldwide. While memory loss is a well-known symptom, it's crucial to understand that dementia is not a normal part of aging and is caused by damage to specific regions of the brain. The answer to the question, **which brain structure is involved in dementia**, is not a single one, but a network of interconnected areas affected by various neurodegenerative diseases.