A recent study suggests that pensioners who continue working part-time may significantly reduce their risk of developing dementia. Researchers from Washington University in St. Louis found that individuals who remained employed part-time into their mid-70s were nearly 40 percent less likely to be diagnosed with dementia compared to those who retired completely or worked full-time past retirement age.

The study tracked close to 14,000 participants, focusing on employment patterns after the traditional retirement age of 66. The findings indicate that part-time work offers cognitive benefits, potentially by maintaining mental stimulation, social engagement, and a structured daily routine. In contrast, both full retirement and sustained full-time employment appeared less favorable for cognitive health.

Dementia currently affects almost one million people in the United Kingdom, with projections estimating the number will rise to 1.4 million by 2040. Previous research has suggested that ceasing work entirely can contribute to cognitive decline due to reduced social and mental activities.

In their report published on the preprint server medRxiv, the researchers noted the balance part-time work provides. They argued that, compared to full retirement, part-time employment may help sustain the brain’s cognitive functions through increased social interaction and routine. Conversely, the reduced hours compared to full-time work might allow more time for rest, leisure, and other activities supportive of overall health.

While the study highlights a potential approach to mitigating dementia risk in aging populations, it does not establish a direct cause-effect relationship, and further research is needed to understand the underlying mechanisms fully. Nonetheless, the findings suggest that maintaining some level of employment after retirement could be beneficial for cognitive well-being.