Devi Sridhar's new book  “How Not to Die  (Too Soon) - The Lies We’ve Been Sold, and the Policies That Could Save Us” is focussing on the way wellness culture ignores the societal context in which health is really created. As a trained personal trainer and professor of global public health, Devi's straddling both of those worlds, and joins us to talk about how she would tackle our lowering life expectancy. Also, John Downey, from the Centre of Health Technology at Peninsula Medical School, and Martha Lee from NHS Devon Integrated Care Board, have written about Portsmouth's "Living Lab" - which has been set up to test how health tech can actually work in the real world, but also (importantly, critically) how it can be properly evaluated and integrated into the NHS and social care. Reading list How Not to Die (Too Soon) Harnessing predictive prevention to shift elderly care from hospital to community in England