 They were injured, but non-life-threateningly. No names were leased at this time. And Minnesota Department of Health says students who vape are showing signs of increasing nicotine dependency. Findings released show nearly 80% of the students surveyed showed one or more signs of dependence that includes unbearable cravings and reaching for their vape without realizing it. While 7 out of 10 students said they wanted to quit, the survey also showed two-thirds of students had tried to quit more than 10 times but were just unable.