public health achievements

10 great public health achievements credited with extending US life expectancy in the 1900s by 25 years:
- Immunizations
- Motor vehicle safety
- Workplace safety
- Control of infectious diseases
- Declines in deaths from heart disease and stroke
- Safer and healthier foods
- Healthier mothers and babies
- Family planning
- Fluoridation of drinking water
- Tobacco as a health hazard