But oftentimes the consequences of these chemical substances can linger for many years, as may be the case with polychlorinated biphenyls , a course of chemical substances that was banned in the 1970s, but that is found to be causing instances of breast cancers today. A recent study released in the journal Breasts Cancer Study and Treatment clarifies how persistent PCBs, that used to be put into coolant fluids, electrical motors, capacitors and various other industrial equipment to getting banned prior, are continuing showing up in the bloodstreams of humans today.Naisha Liriano, 18, began smoking in 14 but switched to e-cigarettes then. ‘It was like Sour Patch taste,’ she said. ‘THEREFORE I said okay, I needed to try it, so that it was attempted by me and it had almost the same impact as a cigarette, but it just had flavor in it.’ The CDC report found in 2014, 2.5 million middle and high school students used e-cigarettes. High school students show the most dramatic modification. From 2011 to 2014, e-cigarette use leaped from 1.5 % to 13.4 %, while cigarette use declined from 16 to 9 %. ‘The news that cigarette smoking reaches an all-period low is colored by the fact that we have observed the best explosion in the use of e-cigarettes that one could imagine,’ said Matthew Myers, executive director of the advocacy group Advertising campaign for Tobacco Free Children.