As Britain ages amid austerity, more and more people will suffer from long-term health conditions. Obesity and diabetes are on the rise. Mental health problems are widespread. Tobacco and addictions are well-known killers. Each condition brings high costs, both financial and social. Meanwhile, budgets for the NHS, social care and public health are being squeezed. Despite this potential crisis, new opportunities are emerging to support both healthcare providers and the population. Advances in understanding will change how behaviour can prevent and mitigate ill health. Our approach to health...