Nicotine exposure research focuses on studying the effects of nicotine on the body and brain. This area of research aims to understand how nicotine interacts with various systems in the body, including the central nervous system, cardiovascular system, and respiratory system. Researchers investigate the addictive properties of nicotine, its impact on cognitive function, and its potential role in the development of various health conditions, such as cardiovascular disease and cancer. Studies in this area also explore the different methods of nicotine delivery, such as smoking, vaping, and nicotine replacement therapies, and how these methods affect nicotine exposure and absorption in the body. Additionally, research in this field may also examine the effects of secondhand smoke exposure on non-smokers and vulnerable populations, such as pregnant women and children. Overall, nicotine exposure research plays a crucial role in informing public health policies and interventions aimed at reducing tobacco use and its associated health risks.