Cigarettes are a danger to your health for many reasons.
Tobacco, when smoked, contains carbon monoxide, also often referred to as ‘the silent killer’ in reference to leaks in buildings. When carbon monoxide enters your body, it enters your blood stream and binds to the hemoglobin in your blood cells. Carbon monoxide binds much stronger to hemoglobin than oxygen, and takes the place of it in your bloodstream. When your bloodstream is filled with carbon monoxide, your organs do not receive enough oxygen, and slowly die, This means that your brain, lungs, heart, and every tissue and organ in your body slowly wither away. They all rely on blood to transport nutrients and oxygen.
Smoking paralyzes cilia in your body, which are small hairs that line the tissues inside your body, and also causes the mucus in your body to be heavily smoke-laden. It may not sound like much, but they play an important part in capturing and removing waste from your body. Without them, a great deal of waste stays in you. Smokers are also extremely prone to chronic bronchitis, where the bronchi in your lungs are swollen and clogged with mucus, preventing proper oxygen and carbon dioxide exchange.
Tobacco is also known to contain tar, which leaves a sticky brown residue, which is clearly shown in the smoker’s lung. Cancer Research UK has reported that cigarettes contain over 70 chemicals that lead to cancer.
Most importantly, notice how the smoker’s lung doesn’t inflate very well. Smoking can cause emphysema, which causes lungs to lose elasticity. This is incredibly dangerous, as the body will not be able to get enough oxygen, and expel all of the carbon dioxide.
Tobacco contains nicotine, which increases heart rate and blood pressure, and is extremely hard to quit. The best way to avoid all these health conditions is to stay away from smoking in the first place.