Why has the human population increased so much in the last few centuries, although we actually invented effective birth control methods?

Question

Why has the human population increased so much in the last few centuries, although we actually invented effective birth control methods?

In: 211

Answer 1

Vaccines and public sanitation. Vaccines and environmental laws. Vaccines and better nutrition. Vaccines and antibiotics. Vaccines and chemical fertilizers. Vaccines and hypertension drugs. Vaccines and helmets.

See a pattern here? When is the last time you were out in public and you saw someone in leg braces from childhood polio? I think there are one or two iron lungs left in the USA.

Before the widespread use of vaccines, a lot of kids died of childhood illnesses. Without smallpox and the various diseased treated by penicillin culling our young, more young people made it to adulthood.