This guideline covers how local communities, with support from local organisations and networks, can help prevent people from becoming overweight or obese or help them lose weight. It aims to support sustainable and community-wide action to achieve this. The guidance will support the Department of Health’s Healthy lives, healthy people: a call to action on obesity in England and the public health outcomes framework. It provides an organisational framework for existing NICE guidance about obesity prevention or management. In June 2017, we amended the wording of the section headed ‘Whose health will benefit from these recommendations?’ to include people with learning disabilities.