I started vaping (commercial product with 2.5% nicotine) and like it a lot, feel calmer and like the effect. But after 2+ years not having hot flashes any more and 4 years after having last menstrual period, I am having hot flashes again, seems like more after vaping. I wonder whether any other women have this and if anyone knows if there is any research on it. I did try CBD before and had a period which was weird so must be a hormone effect. Internet research is all over the map.