Define Surgery?

Surgery ! Does the word itself not create a feeling of anxiety and bring our thoughts towards a debilitating state of health which would be accompanied by pain, inability to move and a high susceptibility for severe morbidity/mortality! Well, surgery, in fact, is one of the most stressfull situations encountered in life. But have you ever focused your thoughts as to what exactly does the term surgery mean? or during which situations is surgery performed? What is the impact of a surgical procedure on our health and how call judicious utilization of medical and dietary services improve the ultimate outcome?