Canine cancers give clues about human health risks
University of Queensland researchers are looking to dog owners for data on protecting pet—and human health—from environmental hazards.
University of Queensland researchers are looking to dog owners for data on protecting pet—and human health—from environmental hazards.
Veterinary medicine
Nov 10, 2022
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3
Using state-of-the-art techniques, researchers have gained a better understanding of the complex mix of hazardous chemicals in third-hand smoke—the residual contamination from cigarette smoking—which can linger long after ...
Biochemistry
Sep 16, 2022
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A new paper examining whether heated tobacco products emit smoke has been published in the academic journal American Chemical Society Omega.
Analytical Chemistry
Jun 28, 2022
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71
New research has identified a lesser-known form of ozone playing a big role in heating the Southern Ocean—one of Earth's main cooling systems.
Environment
Apr 22, 2022
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In a courtesy call to HE the President of Malta at San Anton Palace on Thursday, February 11, 2021, Dr. Noel Aquilina from the Department of Chemistry, accompanied by Professor Emmanuel Sinagra, Head of the Department of ...
Environment
Feb 12, 2021
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9
In 10 years of studying thirdhand smoke, which is the toxic cigarette residue that clings to virtually all indoor surfaces for months or years, Berkeley Lab scientist Hugo Destaillats said the most frequent question he hears ...
Environment
Jan 15, 2021
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Second- and thirdhand tobacco smoke have received lots of attention, but much less is known about the compounds deposited on surfaces from cannabis smoke. Now, researchers reporting in ACS' Environmental Science & Technology ...
Other
Dec 2, 2020
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72
Tobacco is not a simple crop. It is commodity fraught with health, economic and political implications. These last are the focus of Sarah Milov's new book.
Other
Oct 11, 2019
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Chemists at Johannes Gutenberg University Mainz (JGU) have developed a technique that reduces the toxic effects of commercially available cigarettes. In spite of the fact that the World Health Organization (WHO) estimates ...
Bio & Medicine
May 29, 2017
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15
A Michigan State University scholar is warning those who read about the latest groundbreaking research to proceed with caution.
Social Sciences
Feb 19, 2017
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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.
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