Nicotine, a major component of cigarette smoke, may play a role in breast cancer metastasis by affecting immune cells in the body. Chronic exposure to nicotine can lead to changes in the lung environment, making it more conducive for cancer cells to spread.
This process involves the recruitment of specific neutrophils, known as N2 neutrophils, which support tumor growth and metastasis. Understanding this interaction helps highlight the risks associated with nicotine consumption beyond its addictive properties.