The U-M Center for Health Communications Research and the National Cancer Institute have developed a text messaging program called Tips4Health that aims to promote healthy habits in people that sign up. The U-M Comprehensive Cancer Center is using the service to deliver behavioral interventions for smoking cessation, healthy eating, and physical activity. A text messaging program to encourage colon cancer screening is also under development. These programs were developed under the direction of Larry An, MD and Sarah Hawley, PhD.