Brain Size May Predict Alzheimer’s Risk

Alzheimer’s disease and cognitive impairment can seriously affect a person’s ability to perform their daily activities, but only 45% of people with Alzheimer’s or their caregivers are told of their diagnosis. Now, a new study suggests larger brain size could herald a reduced risk of cognitive impairment, including dementia.

The research is published in the journal Alzheimer’s Research and Therapy.

It focuses specifically on the hippocampi, two “seahorse-looking structures” located in the left and right brain that help form new memories. When these structures are impaired — due to Alzheimer’s disease, for example — it can be difficult to remember things that have happened recently.


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