No. But it may wreck your lungs. I work Health care. Anecdotal, but I have so many young people with spontaneous pneumothoraces, like probably 10 in the last 6 months; 30+ in that past few years. Sad to see otherwise young and health individuals with chest tubes and on oxygen. I don’t endorse any tobacco, but if I did, I’d take my chances with traditional methods over vaping.
Research found that vaping/smoking nicotine does decrease food cravings but it is not good for your health. If you want to vape than no it will not break a fast and it will decrease hunger, although not a healthy way. Now GET THAT FAT IN YA.