The relationship between nicotine and smoking has long intrigued the scientific community, as smoking is not only a health issue but also a complex psychological and physiological phenomenon. Nicotine, as the main active ingredient in tobacco, plays a significant role in the development of addiction. Researchers have previously considered the rapid entry of nicotine into the brain as a key factor in addiction. However, recent studies are shedding new light on this approach and raising the question of whether the speed of nicotine accumulation in the brain is truly so decisive. Research conducted among smokers has yielded surprising results that may open new perspectives in understanding nicotine addiction. Compared to…