Cancer and smoking

There are numerous studies and publications on smoking and cancer risks.

Su-jok can point to several unpleasant moments about modern lifestyle:

--- cancer is related to Dryness energy growing from epithelium and 

connective tissue

--- Dryness controls lungs and colon among inner organs, respiratory and 

immune system

--- Dryness relates to negative emotions of grief, frustration, depression

So everything which weakens respiratory system directly harms everything related to 

Dryness energy.