Each £1 invested in public health interventions could offer an average return on investment to the wider health and social care economy of £14 | NIHR Signal
This systematic review looked at 52 studies where the return on each £1 ranged from -£21.3 to £221. Legislative interventions such as sugar taxes, and health protection interventions such as vaccination programmes, gave the highest returns on investment. Interventions such as anti-stigma campaigns, blood pressure monitoring and early education programmes, provided smaller (but still favourable) returns. National campaigns offered greater returns than local campaigns. Falls prevention provided the quickest return, within 18 months.
These findings apply to high-income countries. There are some limitations to the data, as a variety of calculation techniques were used and the quality of the included studies varied. However, these are unlikely to alter the direction or approximate size of these effects. The study shows how cost-effective public health interventions can be and should inspire future research into how to better implement what is already known.