One of the biggest killers in the world:
Respiratory disease
How do we prevent / cure this naturally?
Prevention is relatively easy: Don't smoke - Breathe clean air - Healthy eating.
But we may actually give some advice to cure this that some won't like and that is to take advantage of 3d printers to print new organs. But this does not mean go out and drink and smoke and go stupid just because you can print new organs. Because as you should know this is a huge waste of natural resources.
Natural Cures Not Medicine
Healthy Eating Is Health Insurance!