How Public Health Transformed Human Life
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Public health interventions have doubled human life expectancy over the past two centuries, with achievements including clean water, vaccines, and antibiotics. These interventions have prevented millions of deaths and transformed human life, with notable successes including the eradication of smallpox and reductions in smoking-related deaths.
Public health has transformed human life. In 1800, life expectancy was roughly 35 years. Today it's over 70 globally. Clean water and sewers have prevented diseases like cholera and typhoid. Vaccines, like Edward Jenner's smallpox vaccine, have prevented millions of deaths. The global campaign against smallpox led to its eradication in 1977. Antibiotics, like penicillin, have also changed the calculus of infection. Smoking rates have fallen due to warning labels and advertising bans. Regulatory decisions, like adding iodine to salt, have also saved lives.
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