Asthma is a condition that occurs to the lungs and is very common. People with asthma experience frequent coughing, shortness of breath and tightness in the lungs followed by several asthma attacks. When our lungs inhale oxygen or in other words when we breath millions of small air sacks called alveoli oxygen starts to enter the blood while carbon dioxide is expelled out of our bodies. An asthma attack is usually triggered when dust particles, pollution, mold, etc enter the body of someone with the asthma condition. They enter the lung air ways which causes a chemical called mucus to be released causing swelling and makes the airways narrow making it almost impossible to breath. Other factors such as food allergies, exercise, weather and sometimes strong emotions. With proper doctor's care, a person with asthma conditions can do sports and other activities with the help of his/her asthma inhaler which launches medicine that will reduce the swelling and expand the lung airways making breathing easier again.
Smoking is one of man's worst bad habits. It is basically a drug that is made out of tobacco as well as many other chemicals such as tar and the very addictive, nicotine. Our lungs have a job to do, they are made to inhale oxygen and distribute it among the rest of the body then exhale the waste product which is carbon dioxide. Inhaling, smoke instead of oxygen causes the lungs to literally start getting coated with tar causing damage to it cells and also causing it start changing in color to black. This affects the human being over time and causes diseases such as emphysema, lung cancer and heart disease. Other than diseases, smoking also has some other side effects, including developing shortness of breath and constant coughing which are caused by the lungs having too much tar that makes it harder to inhale oxygen and transfer it to the rest of the body. Finally, smoking can be really hard to quit, as you can see, many smokers will have trouble leaving this very bad habit because of the excess nicotine that supposedly gives the smoker 'pleasure' while smoking.
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