A new UK study reveals that caring for someone for 50 hours or more per week leads to accelerated cognitive decline in middle-aged and older people. However, providing care for only five to nine hours weekly has the opposite effect, boosting brain health and offering lasting benefits into older age.
Double-Edged Sword of Caregiving
Dr Baowen Xue, lead author of the report from University College London, described caring responsibilities as a 'double-edged sword.' Lighter caregiving can provide mental stimulation and a sense of purpose, but overloaded caregiving accelerates mental decline, affecting mental sharpness and quick thinking.
Study Details
Researchers compared the cognitive health of 2,765 carers aged 50 and over with 2,765 non-carers from the English Longitudinal Study on Ageing. They focused on executive function and memory. Participants averaged 60 years old, with 56% women. The study was published in the journal Age and Ageing.
Those providing 50+ hours of care per week exhibited accelerated cognitive decline, as the demands of high-intensity care overshadowed any cognitive stimulation. Full-time carers often have little opportunity for work or social life, leading to loneliness and sleep disruption, compounding negative effects on cognition.
National Context
The 2021 UK census found 5.8 million unpaid carers, with 1.7 million providing at least 50 hours of care weekly. Carers UK research shows 74% of carers feel stressed or anxious, 40% feel depressed, and 35% report poor mental health. The charity's chief executive, Helen Walker, called the findings 'extremely worrying' and urged more government and NHS support.
The proportion of adults providing care for over 35 hours weekly rose by 71% between 2003-04 and 2023-24, according to Joseph Rowntree Foundation research. The UCL study also found that caring for someone within the household led to faster cognitive decline than caring for someone outside.
Calls for Action
Researchers urged better access to funded formal and replacement care for intensive carers. By 2040, around 20% of adults in England will live with major illnesses, increasing demand for unpaid care. Caroline Abrahams of Age UK emphasized the need for more support so carers can maintain their own health while caring for loved ones.
