A better understanding of dementia risk can lead to improvements in care and in treatments, and a new study identifies a link between changes in brain shape and declines in cognitive functions – such as memory and reasoning.

The idea is that some of the wear and tear that eventually leads to dementia can also alter the brain's structure and shape, and looking out for these shifts could be a relatively simple way of revealing dementia early.

These new findings are from researchers at the University of California, Irvine (UC Irvine) and the University of La Laguna in Spain, and they build on what we already know about how the brain naturally shrinks as we get older .

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