Does frailty hold the key to early dementia diagnosis?

A study involving more than 1600 participants suggests frailty could be an important independent clinical marker to help diagnose and potentially treat dementia.

It appears that being frail accelerates the onset of dementia, particularly in people who show little or no signs of the disease. This is according to a University of Queensland (UQ)-led study that analysed longitudinal data from more than 1600 participants in the Memory and Aging Project coordinated by Rush University in the United States over 24 years.

“Frailty has traditionally been linked to neurodegenerative conditions like dementia, but instead of just being a consequence of aging or declining health, it appears to play its own role in shaping how dementia develops and is diagnosed,” Dr David Ward from UQ’s Frazer Institute said.

“Our findings show older adults living with frailty are diagnosed with dementia two to three years earlier than those who are less frail,” Ward added. “Importantly, people who were considered frail but did not have the usual brain abnormalities associated with dementia developed the condition 5 to 6 years earlier.”

Frailty is not only positioned as an early marker for dementia risk by the findings, but it is also suggested that managing frailty may help delay the onset of dementia. “The encouraging message is that frailty is often preventable and treatable,” Ward said.

“Regular exercise — especially strength training — can delay, reduce and in some cases improve frailty, particularly when combined with good nutrition and social engagement,” Ward added. “If clinicians routinely measure and monitor frailty, there may be opportunities to delay dementia progression and improve outcomes.”

The link between frailty and earlier dementia diagnosis was found to be consistent across all groups studied, although the effect appeared stronger in men. “A gene variant called APOE ε4 is associated with a higher risk of developing Alzheimer’s disease, but frailty affected carriers and non-carriers in the same way,” said study co-author Tom Strating, a medical student at Maastricht University in the Netherlands.

“People with fewer dementia-related brain changes would usually be expected to develop dementia later,” Strating said. “However, this benefit significantly reduced in people with frailty, who developed dementia at a similar age to those with more brain changes.

“Only people with low levels of frailty appeared to gain the protective benefit of having fewer brain changes,” Strating added. The study was published open access in Journal of Neurology, Neurosurgery and Psychiatry and you can read it at doi.org/10.1136/jnnp-2026-338460.

Image credit: iStock.com/Cecilie_Arcurs