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What is the youngest person to have dementia? A look at extremely rare early-onset cases

According to a 2023 case study published in the *Journal of Alzheimer’s Disease*, the youngest person to be diagnosed with probable Alzheimer's disease was a 19-year-old male from China. The extremely rare case has challenged conventional thinking about who can be affected by dementia and has brought new attention to the complexities of very early-onset cognitive decline.