Subtle changes in driving habits may be one of the earliest signs of cognitive decline, even before dementia is obvious. A study published in Neurology found that older adults with mild cognitive impairment drove less than those with normal cognition, especially at night and on longer trips. Researchers say these everyday changes could help spot early brain changes sooner than memory tests alone.
The study followed nearly 300 adults age 65 and older and tracked their driving for up to three years using in-car devices. People with mild cognitive impairment took fewer trips, avoided long drives and were less likely to drive in unfamiliar areas. Over time, they also showed more sharp turns, a sign that driving skills may be slipping. Some changes may reflect cautious choices, while others may signal growing difficulty.
These findings matter because people with cognitive impairment face a higher risk of car accidents, and early warning signs are often missed. Researchers suggest that long-term driving patterns could help identify when someone may need cognitive screening or a closer look at driving safety. While more research is needed, the study adds to evidence that everyday behaviors like driving can offer early clues about brain health.
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