Research says more than 80% of the diseases are related to stress. Stress is a physical response to events that make us feel threatened or upset us in some way. Modern life is full of deadlines, frustrations relationship issues and hassles. For some extend stress is not always bad. It helps us to perform under pressure and motivates us to do our best to accomplish things that need to get done. But beyond a certain limit, it starts causing major physical and mental damages. It can also be called as a Cancer. If not treated on time it can completely take charge and spread like a cancer.

http://www.rapidmindpower.com/2/post/2013/10/stress-vs-mind-power.html