News tagged with tobacco
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 |
Control of heart disease risk factors varies widely among outpatient practices, according to a study presented at the American Heart Association's Quality of Care and Outcomes Research Scientific Sessions 2013.
Health May 17, 2013 | not rated yet | 0
Tobacco use remains the leading preventable cause of death and disease in the United States. Declines in smoking among youths were observed from the late 1990s. "However, limited information exists on trends in smokeless ...
Addiction May 14, 2013 | not rated yet | 0
Non-smokers should give hotels that allow smoking in certain rooms a wide berth, say the authors, and instead choose completely smoke free hotels.
Health May 13, 2013 | not rated yet | 0
New research reveals that Solanaceae—a flowering plant family with some species producing foods that are edible sources of nicotine—may provide a protective effect against Parkinson's disease. The study appearing today ...
Parkinson's & Movement disorders May 09, 2013 | not rated yet | 0
People with higher levels of cadmium in their urine—evidence of chronic exposure to the heavy metal found in industrial emissions and tobacco smoke—appear to be nearly 3.5 times more likely to die of liver disease than ...
Surgery May 09, 2013 | not rated yet | 0
Teen smokers who rationalize their use of cigarettes by saying, "At least, I'm not doing drugs," may not always be able to use that line.
Health May 05, 2013 | 2 / 5 (1) | 0
Smoking is the most preventable risk factor for cardiac and lung disease and is expected to cause 1 billion deaths during the 21st century. Electronic cigarettes have been marketed in recent years as a safer ...
Addiction Aug 26, 2012 | 4.2 / 5 (5) | 4 |
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 |
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 |
(HealthDay)— More Americans are meeting diabetes care goals, but nearly half still aren't achieving major targets for controlling blood sugar, blood pressure and cholesterol, government health officials ...
Diabetes Apr 24, 2013 | not rated yet | 0
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 |
(HealthDay News) —The U.S. Supreme Court on Monday rejected a tobacco industry challenge to a controversial 2009 federal law that mandates graphic warning labels on cigarettes. The high court refused to ...
Health Apr 22, 2013 | 5 / 5 (2) | 3
Studies find that toxicity caused by second-hand smoke remains long after a smoker leaves the premises
(Medical Xpress)—Researchers are finding that, long after a smoker leaves the premises, the toxicity caused by second-hand smoke remains and transforms into something even more deadly.
Health Mar 07, 2013 | 3 / 5 (2) | 1
Oropharyngeal squamous cell carcinoma (OPSCC) is a form of cancer that affects the cells lining the middle part of the throat, including the soft palate, the base of the tongue, the tonsils, and the pharynx.
Cancer May 01, 2013 | not rated yet | 0
Tobacco is an agricultural product processed from the fresh leaves of plants in the genus Nicotiana. It can be consumed, used as an organic pesticide, and in the form of nicotine tartrate it is used in some medicines. In consumption it most commonly appears in the forms of smoking, chewing, snuffing, or dipping tobacco, or snus. Tobacco has long been in use as an entheogen in the Americas. However, upon the arrival of Europeans in North America, it quickly became popularized as a trade item and as a recreational drug. This popularization led to the development of the southern economy of the United States until it gave way to cotton. Following the American Civil War, a change in demand and a change in labor force allowed for the development of the cigarette. This new product quickly led to the growth of tobacco companies until the scientific controversy of the mid-1900s.
There are many species of tobacco, which are all encompassed by the plant genus Nicotiana. The word nicotiana (as well as nicotine) was named in honor of Jean Nicot, French ambassador to Portugal, who in 1559 sent it as a medicine to the court of Catherine de Medici.
Because of the addictive properties of nicotine, tolerance and dependence develop. Absorption quantity, frequency, and speed of tobacco consumption are believed to be directly related to biological strength of nicotine dependence, addiction, and tolerance. The usage of tobacco is an activity that is practiced by some 1.1 billion people, and up to 1/3 of the adult population. The World Health Organization reports it to be the leading preventable cause of death worldwide and estimates that it currently causes 5.4 million deaths per year. Rates of smoking have leveled off or declined in developed countries, however they continue to rise in developing countries.
Tobacco is cultivated similar to other agricultural products. Seeds are sown in cold frames or hotbeds to prevent attacks from insects, and then transplanted into the fields. Tobacco is an annual crop, which is usually harvested in a large single-piece farm equipment. After harvest, tobacco is stored to allow for curing, which allow for the slow oxidation and degradation of carotenoids. This allows for the agricultural product to take on properties that are usually attributed to the "smoothness" of the smoke. Following this, tobacco is packed into its various forms of consumption which include smoking, chewing, sniffing, and so on.
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This text uses material from Wikipedia and is available under the GNU Free Documentation License.