I think the most helpful method for increasing the health of a community is health education. Health education focuses on providing individuals with the knowledge and skills to make healthy lifestyle choices, such as proper nutrition and physical activity. Health education can also provide information about the prevention of disease and illness and help individuals understand the importance of preventive health care and regular screenings.
The least helpful method for increasing the health of a community would be medical intervention. Medical intervention relies on medications and treatments to address health issues rather than preventive measures. This approach can be costly and often does not address the underlying issues causing health problems. Additionally, it can be difficult to measure the effectiveness of this approach, and it does not address the root causes of illness or disease.