more commentary on electronic cigs... I've noticed that quite a few people are concerned about the amount of nicotine in these e-cigs. See, the problem is that with a normal cig, you smoke it until it's gone, and if you are satisfied at that point, you stop. If not, you light another and smoke a portion or the whole thing. Well, an e-cig has the equivalent of a pack of cigarettes of nicotine in them, and you can smoke the thing for hours before the battery goes dead. So, how do you know when to stop? If you are a pack a day smoker, you would want to "vape" one cartridge a day, max. The only problem, of course, is that you don't know when you are about to run out of juice (nicotine / propylene glycol / flavoring mix). This can be a serious problem, as if you are switching from regular cigs to e-cigs, you could end up becoming more addicted to nicotine than you already were! I think the key is moderation. Limit yourself to about four minutes max per session. That will work for some, but for others, the situation is different. This is because of the way e-cigs work. Since they aren't burning, they are never "out" in a sense. This changes the behavior of some smokers such that they will carry the device with them at all times, and momentarily take a puff or two whenever they feel like it. It seems to me that when using the device this way, you will automatically increase your intake of nicotine, and thus increase your dependence on it.
And another concern, is cancer. Though there are no causative links suggesting that nicotine causes cancer, there are studies which show that if you do have cancer, nicotine increases the vascularization (angiogenesis) of the cancer, causing it to grow. So, if you do have cancer, and it's treatable, it's probably best to quit cold turkey. In that case, piracetam and lecithin supplementation may help.  ¶ 11:08 AM