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Kick the butt: Smoking changes lung cells, readies them for cancer

Chronic exposure to cigarette smoke can change lung cells over time, making them more vulnerable to disease and priming them to develop cancer, say US researchers. The report in the journal Cancer Cell is based on lab experiments on lung cells that were exposed to chronic cigarette smoke – the equivalent of a person smoking for 20 to 30 years. After about 10 days, the cells began to change their gene expression, a process known as epigenetic change. It took 10 months before these changes built up enough to boost…

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Cold Weather, Smog Could Lead to Rise in Heart, lung Cases

The week following Diwali has seen Delhi and the National Capital Region shrouded in a blanket of smog that has made breathing difficult and led to a rise in heart and lung complaints. With the situation unlikely to change for a few more days and the nippy winter already knocking at the doors, cardiologists and pulmonologists have warned that prolonged exposure to the highly toxic air can cause cardiac arrest and lung complications. Noting that cardiovascular disease (CVD), over the past decade, has emerged as the single most important cause…

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Smoking a pack a day causes 150 mutations in every lung cell, research shows

Smoking a pack a day causes 150 mutations in every lung cell, research shows (Getty Images) Scientists have found that smoking a pack a day of cigarettes can cause 150 damaging changes to a smoker’s lung cells each year. The findings come from a study of the devastating genetic damage, or mutations, caused by smoking in various organs in the body. Publishing in the journal Science on Thursday, the researchers said the findings show a direct link between the number of cigarettes smoked in a lifetime and the number of…

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Smoking a Pack a Day Causes 150 Mutations in Every Lung Cell

Scientists have found that smoking a pack a day of cigarettes can cause 150 damaging changes to a smoker’s lung cells each year. The findings come from a study of the devastating genetic damage, or mutations, caused by smoking in various organs in the body. Publishing in the journal Science on Thursday, the researchers said the findings show a direct link between the number of cigarettes smoked in a lifetime and the number of mutations in the DNA of cancerous tumors. The highest mutation rates were seen in lung cancers,…

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Exercise May Help Patients with Lung Disease

Increased physical activity among patients with a type of lung disease could reduce their risk of anxiety as well as depression, a study has found. Chronic obstructive pulmonary disease (COPD) is a group of lung diseases that block airflow and make it difficult to breathe. The prevalence of depression and anxiety is approximately 40 per cent in COPD patients while the corresponding figure is less than 10 per cent in the general population, the study said. But, the results suggested that in patients with COPD, higher levels of physical activity could lessen…

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Air Pollution Tied to Shorter Survival With Lung Cancer

Exposure to air pollution has long been associated with an increased risk of lung cancer, and a new study suggests it might also be tied to a faster death from the disease. Researchers examined cancer registry data on more than 350,000 people diagnosed with lung cancer in California and found patients who lived in communities with higher than average levels of air pollution typically died sooner than their peers who lived in places with cleaner air. Patients with lung cancer may be a new subgroup of people susceptible to the…

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