how can you make people better by knowing why they’re ill???

Question: how can you make people better by knowing why they're ill???
- Keywords:
  cure,
  ill,
  illness,
  medicine,
  research
Asked by teoismad to Cathal on 15 Mar 2012.
- Cathal Breen answered on 15 Mar 2012:
  
  If I have a knowledge of what is going wrong with someone then I can action a treatment that counteracts that wrong doing. For example if I diagnose someone with a fast abnormal heart rate (this means the persons heart is beating much too fast) then I can prescribe a medication that acts to slow this heart rate down and therefore remove what is wrong with them.

Question: how can you make people better by knowing why they're ill???