As by the Campaign for Tobacco-Free Kids: "overall youth smoking declined significantly in 2013, and smoking rates fell to record lows for all three grades surveyed (grades 8, 10 and 12). This is the third year in a row that this survey has found a significant annual decline in youth smoking, which is highly encouraging after several years in which progress had nearly stalled. For all three grades combined, the percentage of students who reported smoking cigarettes in the past month fell from 10.6 percent in 2012 to 9.6 percent in 2013. Smoking declined from 17.1 to 16.3 percent among 12th graders, from 10.8 to 9.1 percent among 10th graders and from 4.9 to 4.5 percent among 8th graders. The declines were statistically significantly for 10th graders and for all three grades combined."

"This is the first study to examine the acute effects of electronic cigarette use on myocardial function. No adverse effects on LV [left ventricular] myocardial function were observed after using electronic cigarette with nicotine-containing liquid for 7 minutes. On the contrary, significant changes in diastolic function parameters were found after smoking 1 tobacco cigarette."

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