I saw an interesting news about e-cigarette that teens actually using e-cigarette more than tobacco cigarette. and the trend is growing. And the Center of the Disease says now teens using vaporizers three times more than they did in the 2012. The liquid used in the e-cigarette has different flavors like berry, mango, grape, and those flavors appeals teens. And also there is a study about e-cigarette shows e-cigarette containing nicotine raised from 1 per month in 2010 to 215 per month in 2015, and nicotine overdoes can cause nausea, vomiting, diarrhea. So e-cigarette may help people to quit the tobacco cigarette, but e-cigarette itself can cause other problems.