The Strategy provides evidence-based recommendations for improving health and wellness and addressing leading causes of disability and death. Recommended policy, program, and system approaches are identified for each Strategic Direction and Priority Preference has been given to efforts that will have the greatest impact on the largest number of people and can be sustained over time. Each recommendation is based on the best recent scientific evidence (Appendix 5). Current evidence for prevention is strong, and when effective strategies are implemented they drive significant improvement in the public’s health. Effective types of strategies fall into five majo categories: policy, systems change, environment, communications and media, and.