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That means study results using only one ethnic group may not apply to other groups, hindering dementia prevention and treatment, the study said.For example, studies have found that a gene variant called APOE E4 carries the largest genetic risk for Alzheimers disease in people with European ancestry, but the effect of APOE E4 is half as strong in people of African ancestry, the study said.Increasing the representation of non-European ancestry populations in genome-wide association studies has been identified as a critical scientific and equity issue in genetic studies.

Get latest articles and stories on Science at LatestLY. According to a research published in the journal 'Molecular Psychiatry', scientists discovered many instances where gene variations may increase the risk of Alzheimer's disease and related dementias among people of African ancestry. Science News | Study Reveals Genetic Risk for Dementia Among People of African Descent.

Researchers discovered many genetic risks distinct from those seen in people of European descent in the largest-ever genomic investigation of dementia in people

The impact of traumatic brain injury (TBI), post-traumatic stress disorder (PTSD), and genetic risk factors in a large cohort has never previously been studied

Researchers discovered many genetic risks distinct from those seen in people of European descent in the largest-ever genomic investigation of dementia in people