News tagged with tobacco smoke

Related topics: cigarette smoke , smoking , secondhand smoke , lung function , nicotine

Roman-Britons had less gum disease than modern Britons

The Roman-British population from c. 200-400 AD appears to have had far less gum disease than we have today, according to a study of skulls at the Natural History Museum led by a King's College London periodontist. The surprise ...

Oct 23, 2014
popularity 5 / 5 (1) | comments 0

UK smoking rates continue to fall

The UK has seen a fall in the number of adults who smoke in the country, according to figures from the Office for National Statistics (ONS). ...

Oct 08, 2014
popularity 4 / 5 (1) | comments 0

HHS releases 13th Report on Carcinogens

Four substances have been added in the U.S. Department of Health and Human Services 13th Report on Carcinogens, a science-based document that identifies chemical, biological, and physical agents that are ...

Oct 02, 2014
popularity 5 / 5 (1) | comments 0

Smoking out the facts in the E-cigarette debate

Electronic cigarettes seem to have become as ubiquitous as the vapor they produce. Their popularity has been skyrocketing over the past two years, even in the midst of a fierce debate about their potential ...

Sep 30, 2014
popularity 1.8 / 5 (29) | comments 7

Asia's rising tobacco epidemic

Smoke-filled bars and packed cancer wards reflect decades of neglect of no-smoking policies in Asia, where both high- and low-income countries are belatedly waking up to a growing tobacco-related health ...

Sep 18, 2014
popularity 2.8 / 5 (11) | comments 0

South Korea to hike cigarette price by 80%

South Korea on Thursday proposed a steep 80 percent hike in cigarette prices to cut consumption in a nation with one of the world's highest male smoking rates.

Sep 11, 2014
popularity not rated yet | comments 0

Cigarette co Reynolds taking nicotine gum national

Cigarette maker Reynolds American Inc. is taking its Zonnic brand nicotine gum nationwide, challenging the pharmaceutical industry's hold and pricing power of the market for products to help people stop smoking.

Sep 04, 2014
popularity not rated yet | comments 0

Tobacco display bans protect youth and quitters

Ending the display and promotion of cigarettes and tobacco in retail shops helps prevent young people taking up smoking and keeps quitters on track, according to new University of Otago research.

Sep 02, 2014
popularity not rated yet | comments 0

Tobacco smoking

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.

This text uses material from Wikipedia licensed under CC BY-SA