Aztec doctors used many herbal remedies both to cure and prevent illness. They knew cures for all sorts of things. For fevers they suggested to take regular steam baths, and they thought that the heat would clean and relax them and also sweat out the evil spirits that were poisoning them.

For earaches, Aztec doctors suggested putting liquid rubber in their ears. For broken legs doctors tied splints to the leg, but for legs that were cut, doctors sprinkled ground-up obsidian glass on the wound to help it heal. For colds, doctors suggested putting a drop of collected dew (from the fields) into each nostril twice a day.

If you were expecting a baby, doctors suggested :
Carry some wood ash with you to ward off ghosts if you go out after dark. If a ghost is seen, this could harm your unborn baby.
Do not chew gum, for this could cause your baby's mouth to swell up.
Do not look at the sun during an eclipse; if you do, then your baby will be deformed.
Pray to one of the Aztec goddesses of women everyday. For chest pains, doctors suggested several herbal remedies.
Aztec doctors understood a great deal about the human body. There were plenty of bodies to practice on with all the wars and sacrifices.