The foci of this book are on the social determinants of health, and the importance to our health of our social connectedness and social support that turn on shared social identities. In Chapter 23, Reicher surveys these matters and makes three important concluding points. First, shared social identity in groups creates bonds between people and converts those bonds into social capital. Second, he asserts that the key to a new social model of mental and physical health lies in understanding how to support people in building and consolidating their own social groups. But, importantly, he also points out that social identity can work for good outcomes but also for those that are seen as less positive.