News tagged with tobacco smoke
Measuring enzyme levels in cancer patients may reveal healthy cells' ability to survive chemotherapy
New research from MIT may allow scientists to develop a test that can predict the severity of side effects of some common chemotherapy agents in individual patients, allowing doctors to tailor treatments ...
Genetics Apr 05, 2013 | not rated yet | 0 |
Study IDs key protein for cell death, offers way to kill cancer cells by forcing them into programmed-death pathway
When cells suffer too much DNA damage, they are usually forced to undergo programmed cell death, or apoptosis. However, cancer cells often ignore these signals, flourishing even after chemotherapy drugs have ...
Genetics May 14, 2013 | 5 / 5 (9) | 0 |
Dartmouth researchers have taken an important step in the ongoing battle against secondhand tobacco smoke. They have pioneered the development of a breakthrough device that can immediately detect the presence ...
Health Mar 21, 2013 | not rated yet | 1 |
For expectant moms who may contemplate the pros and cons of natural child birth or Caesarian section, a Henry Ford Hospital study suggests that C-section babies are susceptible to developing allergies by age two.
Immunology Feb 24, 2013 | 5 / 5 (1) | 0 |
Researchers at Moffitt Cancer Center have found a potential targeted therapy for patients with tobacco-associated non-small cell lung cancer. It is based on the newly identified oncogene IKBKE, which helps regulate immune ...
Cancer Feb 15, 2013 | not rated yet | 0 |
A medication being tested to help smokers kick the habit also may help avoid the weight gain that is common after quitting but only in women, according to a study published in the December issue of Biological Psychiatry. This i ...
Psychology & Psychiatry Dec 10, 2012 | 1 / 5 (1) | 0 |
(Medical Xpress)—University of Nottingham researchers have been involved in a new study showing that exposure to second-hand smoke, as well as a mother's smoking while pregnant, significantly increases ...
Health Dec 10, 2012 | not rated yet | 1 |
(AP)—A federal judge on Tuesday ordered tobacco companies to publish corrective statements that say they lied about the dangers of smoking and that disclose smoking's health effects, including the death on average of 1,200 ...
Health Nov 27, 2012 | 5 / 5 (3) | 3
(HealthDay)—The American Cancer Society launches its annual Great American Smokeout event Thursday as anti-smoking advocates push to reverse a slowdown in the decline of tobacco use in the United States.
Addiction Nov 15, 2012 | 5 / 5 (1) | 0 |
(HealthDay)—Only one-quarter of smoking parents adopt a strict smoke-free car policy, and nearly half who don't enforce such a ban light up while driving with their children, a new study indicates.
Pediatrics Nov 12, 2012 | not rated yet | 0 |
High cigarette prices, smoke-free air laws, marketing restrictions and other measures, all part of Brazil's strong tobacco control policies, are credited for a 50 percent reduction in smoking prevalence between ...
Health Nov 06, 2012 | 5 / 5 (1) | 0 |
(Medical Xpress)—Smokers are costing the UK economy £1.4 billion by taking an average of two or three days more sick leave per year than their non-smoking colleagues, a new study has revealed.
Addiction Nov 01, 2012 | 1 / 5 (1) | 0 |
Top box office films last year showed more onscreen smoking than the prior year, reversing five years of steady progress in reducing tobacco imagery in movies, according to a new UCSF study.
Health Sep 27, 2012 | not rated yet | 0 |
Lung cancer is a leading cause of death worldwide and is associated with very low survival rates. Two new genome-sequencing studies have uncovered novel genes involved in the deadly disease, as well as striking ...
Cancer Sep 13, 2012 | 5 / 5 (1) | 0 |
An international team of scientists have shown at an unprecedented level of detail how cells prioritise the repair of genes containing potentially dangerous damage. The research, published in the journal Nature and involv ...
Genetics Sep 09, 2012 | not rated yet | 0 |
Tobacco smoking is the practice where tobacco is burned and the vapors either tasted or inhaled. The practice began as early as 5000–3000 BC. Many civilizations burnt incense during religious rituals, which was later adopted for pleasure or as a social tool. Tobacco was introduced to the old world in the late 1500s where it followed common trade routes. The substance was met with frequent criticism, but became popular nonetheless. German scientists formally identified the link between smoking and lung cancer in the late 1920s leading the first anti-smoking campaign in modern history. The movement, however, failed to reach across enemy lines during the Second World War, and quickly became unpopular thereafter. In 1950, health authorities again began to suggest a relationship between smoking and cancer. Scientific evidence mounted in the 1980s, which prompted political action against the practice. Rates of consumption from 1965 onward in the developed world have either peaked or declined. They however continue to climb in the developing world.
Smoking is the most common method of consuming tobacco, and tobacco is the most common substance smoked. The argicultural product is often mixed with other additives and then pyrolyzed. The resulting vapors are then inhaled and the active substances absorbed through the alveoli in the lungs. The active substances trigger chemical reactions in nerve endings which hightens heart rate, memory, alertness, and reaction time. Dopamine and later endorphins are released, which are often associated with reward and pleasure. As of 2000, smoking is practiced by some 1.22 billion people. Men are more likely to smoke than women, however the gender gap declines with younger age. The poor are more likely to smoke than the wealthy, and people of developing countries than those of developed countries.
Many smokers begin during adolescence or early adulthood. During the early stages, smoking provides pleasurable sensations and thus serves as a source of positive reinforcement. After an individual has smoked for many years, the avoidance of withdrawal symptoms and negative reinforcement become the key motivations.
For more information about Tobacco smoking, read the full article at
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