In civilization IV how do you uncrowd a city?

And also how do make your cities healthier?In civilization IV how do you uncrowd a city?
To uncrowd a city you simply starve it. Make the city select the tiles that aren't food and the population with slowly decrease.



To make a city healthier add stuff like recycling centers, aqueducts, etc... Making your city next to a river will also give you a boost. Having access to a lot of different goods also increases the health of the city. But you're going to have to accept that your biggest cities will always probably have a negative health. Oh yea, there's that one civic I think its environmentalism that increases your health.