Nicotine

Smoking 6: Effects of nicotine on the lungs

Infections ultimately cause cells to die off. New mucous cells are generated to replace them, producing more mucus than before.

The mucus spreads out over the cilia, which were already less motile due to the effects of the nicotine. Covered now by a thick layer of mucus, they can scarcely do their work any more.

The cleaning system of the lungs is now seriously impaired. Bacteria or impurities from the air become trapped in the mucus more easily. This can spark new infections.

The accumulation of mucus, dirt and tar turns the inside of the lungs black.