Why smoking can kill you? Carbon monoxide is an ingredients of car exhaust fume.
Carbon monoxide- some of us heard the name and we know it’s deadly. Like all poisons, there’s a specific biological reason why this gas kills. Carbon monoxide bonds to the hemoglobin molecules in blood. When this happens, the hemoglobin can’t carry oxygen to body tissues. Death within minutes.
Carbon monoxide is an ingredient of car exhaust fumes. Most people know not to run a car engine in a closed garage. But some people willingly to introduce CO into their bodies many times a day. That’s because it’s also an ingredients of tobacco smoke. It’s one reason why chronic smokers experience narrowing of the blood vessels, a weakened heart, and impaired skill and coordination.
Tobacco smoke contains 4,000 different compounds. Chief among them is nicotine. C10 H10 N2. Extracted from tobacco,nicotine is used as a insecticide to kill bugs. In small amounts absorbed from the cigarette (about 1 milligram) it stimulates the nerves and speeds up the heartbeat. It changes the chemistry of the brain,producing a feeling of heightened awareness and well-being. The smoker feels these effect with in 10 to 15 seconds-that’s how quickly nicotine reaches the brain.
But doesn’t stay in the body long. Within an hour, half of it ha been broken down by chemical reactions in the liver and lungs. So the smoker light another cigarette. nicotine is one of the most addictive substances known, and people who take up smoking find it very difficult to stop.
Other chemical in cigarette smoke affect the throat, mouth and specially the lungs. They change the chemistry of living cells, some of them affect the genes that control cell division. When that happens, cells grow and reproduce out of control. and that’s we called cancer. Nine of the chemicals in cigarette smoke have been proven to cause cancer, and eighth other probably cause it. Smoking causes nearly 90% of lungs cancer deaths in America.