Many factors combine to affect the health and wellbeing of individuals and communities. Whether people are healthy or not is influenced by their circumstances and environment. Factors such as where we live, the state of our environment, genetics, our income and education level, and our relationships with friends and family all have considerable impacts on health and wellbeing. However, when people think about health, they tend to think about illness and access to specific healthcare facilities, such as the local doctor's surgery or the nearest hospital. While these services are important, they are just a part of the range of things that influence health. Improving health and wellbeing requires action to address the wider determinants of health, 'lifestyle factors', such as diet, exercise, smoking, and misusing alcohol and drugs as well as access to health and social care services.