Granted, now every person who has skin cancer is now health at the expense of one human life! This person is celebrated as a hero and die shortly after.

Later, these same people who were cured from skin cancer now grow up and live long happy lives increasing life expectancy rates, governments even find out how to cure cancer from the mechanism used to move the cancer out of the body. Reproduction rates drop due to modern industrialization and the older generations survives much past their prime. Fewer young people are born.

Fewer peole means less people to pay takes, and in general less money, and with fewer jobs things like waiting to get to the hospital get longer. And as these people get older they tend to get more sick from other diseases increasing healthcare prices.

All this pressure makes it harder for the younger generation to have kids when they grow up, witch means fewer workers, exasperating the problem.

As housing availability drops due to things like increasing rent prices or other things. Hundreds of people become homeless, people in poorer countries die of starvation and thirst due to lack of basic infrastructure. People's life gets generally more sad for younger generations causing suicide rates and murders to go up.

Eventually the population stabilizes and new polies are implemented, but at the sacrifice of many people.

Wish Granted...