It is well known that health is wealth, but most people ignore their health and get into trouble. Primary prevention of most of the diseases is possible by adopting healthy lifestyles and secondary prevention helps in detecting diseases at an early stage, when they are curable.
The cost of detecting and treating diseases at an early stage is negligible, compared to treatment of diseases which are neglected and detected late. A proactive approach in preventing or diagnosing disease is the best way of fighting against it.