For people aged over 55 who live alone, the risk of dementia is around 30 per cent higher than for those who share their household with at least one other person. Social isolation therefore represents an even greater risk factor than previously thought. At the same time, according to study author Dr Roopal Desai, the number of people living alone – and the associated loneliness – is on the rise.
The analysis drew on data from over 21,000 people across 12 studies conducted in either Europe or Asia. Living alone proved to be a more significant risk factor than physical inactivity, high blood pressure or being overweight. Loneliness, stress and a possible lack of cognitive stimulation are cited as causes. As the reasons for living alone were not investigated, the authors go on to argue that factors such as the loss of a partner could also play a role.
References:
University College London
, Desai R et al.: Living alone and risk of dementia: A systematic review and meta-analysis. *Aging Research Reviews*, 10 July 2020,
https://doi.org/10.1016/j.arr.2020.101122
