How to live longer: The free daily habit that 'sharpens memory' and slows brain decline

Because the study was observational, no cause and effect relationship could be established.

The findings however add to a string of evidence that household work may help preserve cognitive functions into old age.

In previous work, researchers have highlighted the protective effects of specific household chores on the brain and body, notably those of washing up, gardening and cooking.

According to the Alzheimer’s Society, such activities may stave off disease by creating greater volume in the brain.

The areas of the brain involved here are the hippocampus – the area of the brain associated with learning and memories – and the prefrontal cortex – the part of the brain that regulates decision-making and concentration.