Here's something interesting. I've been vaping for 9 months after not having smoked for 15 years and really missing it. I had seen more and more videos about e-cigs and decided to give it a try and absolutely love it. My blood pressure had been running borderline high (140-50/90). At my last physical I asked my doctor to put me on medication to get it lower. I've never told him that I am vaping. Anyway, he did and my pressure dropped to a very good 120 or so over 70. My cholesterol is 149. When I vape, I would think that that would tend to raise it temporarily, but it actually has the opposite effect. It goes down to as low as 105/60-65 and my heart rate stays at 55-65. I must have a high tolerance for nicotine because I regularly use 36 and 48 mg liquids and have even spiked these with unflavored liquid to get more of a pleasing kick. I never get even slightly dizzy nor have any type of a head rush or headache. It just gives me a nice relaxing feel without all the negative health issues or nasty smell of tobacco. I remember that, when I smoked, especially if I smoked two in a row I would almost always get a headache and feel like crap afterwards (I smoked Camel Filters or Camel Wides, maybe a pack a day at the most). I am wondering if anyone else out there is tracking blood pressure and whether they have experienced similar positive effects.