A systematic review comparing cardiovascular disease among informal carers and non-carers.

Exposure to chronic stress increases the risk of cardiovascular disease (CVD). Providing informal care is known to be a stressful activity, but it is not clear whether informal caregiving is associated with CVD risk. This systematic review aimed to summarise and assess the quantitative evidence examining the association between providing informal care to others and CVD incidence in comparison with non-carers.