how can tobacco damage your lungs?
460610
Tobacco smoke contributes to a number of  cancers.\n\nThe mixture of nicotine and carbon monoxide in each cigarette you smoke temporarily increases your heart rate and blood pressure, straining your heart and blood vessels. \n\nThis can cause heart attacks and stroke. It slows your blood flow, cutting off oxygen to your feet and hands. Some smokers end up having their limbs \namputated.\n\nTar coats your lungs like soot in a chimney and causes cancer. A 20-a-day smoker breathes in up to a full cup (210 g) of tar in a year.\n\nChanging to low-tar cigarettes does not help because smokers usually take deeper puffs and hold the smoke in for longer, dragging the tar deeper into their lungs.\n\nCarbon monoxide robs your muscles, brain and body tissue of oxygen, making your whole body and especially your heart  work harder. Over time, your airways swell up and let less air into your lungs.\n\nSmoking causes disease and is a slow way to die. The strain put on your body by smoking often causes years of suffering. Emphysema is an illness that slowly rots your lungs. People with emphysema often get bronchitis again and again, and suffer lung and heart failure.\n\nLung cancer from smoking  is caused by the tar in tobacco smoke. Men who smoke are ten times more likely to die from lung cancer than non-smokers.\n\nHeart disease and strokes are also more common among smokers than non-smokers. \n\nSmoking causes fat deposits to narrow and block blood vessels which leads to heart attack. \n\nSmoking causes around one in five deaths from heart disease. \n\nIn younger people, three out of four deaths from heart disease are due to smoking.
1125975
Smoking make u go blind, causes gangrene, make your leg drop off, rot away your lungs, give you lung cancer, throat cancer, contribute to strokes and heart diseases.\n\nBasically screw up your whole body system. A slow but sure way to die early.
1173581
A few things I can think of right off my head, without reviewing physiology.  Very basic info here, for more details, you can find it in any good physiology textbook.\n\nSmoke in cigarrettes decreases the capacity for hemoglobin to carry O2, and thus decreases the efficiency for O2 diffusion.\n\nCO2 decreases the surfactant in the lungs, making them less efficient in CO2/O2 exchange.\n\nCO2 also damages cells lining the blood vessels (capillaries) that are important in the diffusion process.
489186
it affects your lungs thats it
396233
It can trigger an attack causing inflamation in your lungs, and bronchoconstriction... avoid aerosols if at all possible.
683210
No dear ..It seems that U have been misguided.Nicotine never remains in Lungs..In fact it is absorbed by our pulmonary(lung) veins...so nicotine comes in blood...and this blood when reaches brain, makes nicotine to bind to our brain-nicotinic receptors..which ultimately produces the effects of smokin....But daily smoking  produces some changes in the tissue of lungs which is continous for years can give irreversible lung changes(including cancers)...BUt research has proved n shown that stopping smoking for 10 years approx can bring your lungs to the previous state(non-smoker state)....but this above statement is condition to one thing that in this 10 years , you should'nt have developed the permanent changes..............In all smoking is very bad...But the irony is that I have been smoking for past 6 years....lol
1004984
Cigarettes, so called because the tobacco and other chemicals in them are very bad for you and people who smoke have such a higher rate of developing lung cancer, and other cancers.
173885
Due to the chemicals and compounds in tobacco smoke.
1099084
This sort of thing *can* be caused by exposure to synthetic chemicals, especially cleaning products, pesticides, and even fragrances. Cigarette smoke is the worst one for me. Some of us don't break these things down quickly enough and they build up in the body, which can create all sorts of problems.\n\nNutrition can play a part as well.\n\nTry searching under 'chemical injury' and see if it makes sense to you.
299715
Honestly, I have never heard of it.\n\nHowever, one of the things that smoking does is make your blood platelets stick together...While you're smoking, this increases your risk of stroke, which is why it's a bad thing.\n\nMaybe your platelets have un-stuck, making it easier for the blood cells to come thru small openings caused by the periodontal disease?\n\nReally, that's pretty much a wild guess.  I think you should call your dentist.
1102861
Yes and no.  Smokeless tobacco causes different problems than smoking tobacco.  They are both adequately harm full and can both kill you.  The only reason I might say that it is worse is because it can cause physical deformity because it may cause the removal of part of your face.
799325
I'm a graduate student in Biomedical Engineering, I study Emphysema (a disease people get when they smoke cigarettes). There are over 4000 toxins in cigarette smoke. Most of them are still unknown. Nicotine is probably the worst toxin as it stops and eventually kills the epithelial cells in the lining of the lung, these cells have tiny hairs that usually "beat" upwards causing the mucus to come up to your throat and get swalloed. With that not working, mucus accumulates in the lung. When you smoke your mucus in filled with those 4000 toxins and your body reacts by secreting an enzyme called "trypsin" into your lungs. Trypsin is the same enzyme that your stomach uses to digest steak. Think of how powerfull it is. After years of smoking, your lungs will have been exposed to so much trypsin that you will litterally have holes in your lung. That is the definition of emphysema. \nYou should tell your BF to stop smoking while he's still young. Maybe you should buy him some nicotine patches and gum for christas. it's going to be a very difficult time so be supportive.\nGood luck!\nAnnie
392529
contributes to many types of cancer, emphazymia and other breathing problems. Besides the fact that cigarettes are really expensive and addicting and makes you smell bad. It also affects the people around you.
98448
Occupational exposure to any fumes and/or chemicals can create inflammatory responses within your lung tissue. When this inflammation occurs on a daily basis over a several year period, your lung tissue, specifically the parenchyma will become damaged similiar to that of a chronic smoker. The parenchyma is the distal portion of your lungs that partake in gas exchange (Co2 and 02), when this layer of blood vessels and tissue become destroyed, there is no way to repair the damage. Just think of a coal miner's lung
534519
The main way it affects it is this.  Smoke particles block up the alvioli in the lungs and that is where the exchange of oxygenated and deoxygenated blood cells take place - the more are blocked, the less oxygen can get into the bloodstream and the less oxygen gets to the body's vital organs.  Cigarettes also contains tar which also blocks up the lungs and small traces of arsenic (a poison) which is stored by the body and builds up over a period of time.  As to diseases:\n\nAsthma, Emphysema, permanently stained teeth and fingers, Gingivitis, Gangrene, chronic obstructive pulmonary disease (COPD), acute myeloid leukemia and cancers of the cervix, kidney, pancreas and stomach; abdominal aortic aneurysm, chronic bronchitis, cataracts, periodontitis and pneumonia, colorectal cancer, liver cancer, prostate cancer or erectile disfunction, increased chances of getting breast cancer, cancer of the bladder, eosophagus, larynx, lung, mouth, throat, linked to chronic lung disease, chronic heart and cardiovascular disease as well as reproductive problems. Expect to die 10 to 15 years earlier than non-smokers. \n\nHope that helps.
1030093
Its from your lungs.  Smoking causes the lungs to excrete more and the brown stink comes from the tobacco.\n\nYou dont need to google it.  It is phlegm from your lungs discolored and thickened by the effects of the tobacco.
627382
not good. the nicotine affects ur liver and respiratory system in the long run