This presentation was delivered at the Wearable Tech Show held at the Business Design Centre in Islington London. It looks at the opportunities and challenges presented by disruptive digital technologies being developed for the health sector. It concludes that digital technologies which support preventative healthcare and personal health management are vital for the sustainability of public health services which are globally threatened by lifestyle related conditions such as obesity, diabetes and dementia. It highlights the dangers of over-dependence on technologies such as artificial intelligence and an unreasonable expectation that technologies can absolve us the need to take personal responsibility for our own health management.