Tobacco and nicotine use, from smoking or vaping, can significantly contribute to hair loss by disrupting both blood flow and hormonal balance. Nicotine causes constricted blood vessels, reducing oxygen and nutrient delivery to hair follicles, while chemicals create oxidative stress that damages cells. At the same time, these habits can elevate androgens like DHT, accelerating follicl... https://www.capilclinic.uk/blog/smoking-vaping-and-hair-loss-the-vascular-and-hormonal-pathways-explained/