Doctor insights on:
Does Cigarette Smoking Cause Cancer
Cancer is a group of diseases that is characterized by uncontrolled cell growth leading to invasion of surrounding tissues that spread to other parts of the body. Cancer can begin anywhere in the body and is usually related to one or more genetic mutations that allow normal cells to become malignant by interfering with internal cellular control mechanisms, such as programmed cell death or by preventing ...Read more
Tobacco: When burned produces a number of arylhydrocarbons, and other carcinogens that directly attack human dna leading to mutations. Some are repaired, others propagate over time, mean time, nicotine addicts. The more exposure, probabilistic risk increases for cancer, cardiovascular and lung disease. Evidence is overwhelming indisputable.. ...Read more
So what specifically is happening when a heavy smoker begins to get recurring pleuritis directly caused by the cigarette smoking? No cancer or asthma
Good question: To attribute recurrent pleuritis to smoking cigarettes is perhaps problematic. I'm not an expert in recurring pleuritis but i would be looking for other possibilities. Chronic coughing might make irritation of the pleura more likely but i'm not aware of the chronic bronchitis so common in smokers being the source of pleuritis you may have heard this from someone who knows more than i or not. ...Read more
Serious consequence: Smoking causes more than four in five cases of lung cancer. Lung cancer has one of the lowest survival rates of all cancers. Tobacco smoke contains more than 70 different cancer-causing substances. When you inhale smoke, these chemicals enter your lungs and spread around the rest of your body. Scientists have shown that these chemicals can damage dna and change important genes. ...Read more
100: 100 cigarretes on a lifetime increases risk for at least 10 years. However about 20% of smokers end up with lung cancer on their lifetime.However everybody does get emphysema to various degrees and accelerated arteriosclerosis triggering heart attacks and strokes at a younger age by persistent cigarrete smoking.Animal experiments dogs usually get cancer after 13, 000cigs. ...Read moreSee 1 more doctor answer
Nobody truly knows: but the chronic irritation of certain aromatic hydrocarbons in the smoke ("tars") progressively irritates cells, increases the number that die, with new ones taking their place that over many years become more and more abnormal (metaplasia), finally becoming very abnormal (dysplasia) and ultimately becoming cancer (neoplasia). I do not know the exact cellular mechanisms, but some scientists do. ...Read more
Wish we knew: The medical community wishes we knew the answer to this question. It's not as simple as #of years smoking=risk of cancer. There are other factors related to contracting cancer - genetic disposition and other "triggers". If you're currently smoking, the sooner you quit - the better! that we know for sure. Good luck! ...Read moreSee 2 more doctor answers
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