The hazards of second hand smoke to non smokers

Brain tumors Secondhand smoke causes other diseases and death Secondhand smoke can be harmful in many ways.

The hazards of second hand smoke to non smokers

Smoking facts and evidence Smoking facts and evidence Read the key facts about smoking and cancer risk, and find the supporting evidence from academic research and scientific studies to see why we say what we do. Tobacco is the single biggest cause of cancer Experts agree that tobacco is the single biggest avoidable cause of cancer in the world.

It also causes tens of thousands of deaths each year in the UK from other conditions, including heart and lung problems. Oxford Textbook of Medicine. Oxford University Press; Mortality from smoking in developed countries - or later.

The fraction of cancer attributable to modifiable risk factors in England, Wales, Scotland, Northern Ireland and the United Kingdom in British Journal of Cancer https: Accessed January 9, Mortality in relation to smoking: Tobacco smoking and all-cause mortality in a large Australian cohort study: Avoidable global cancer deaths and total deaths from smoking.

There is some evidence that smoking could cause breast cancer [3—7]. Smoking causes a higher proportion of lung cancer cases than for other cancer types. The voice box larynx has the next-highest proportion of cases linked to smoking — with almost two-thirds of cases caused by smoking [8].

Tobacco smoking and cancer: Preventable exposures associated with human cancers. J Natl Cancer Inst. Active and passive cigarette smoking and breast cancer risk: Results from the EPIC cohort. Active smoking and breast cancer risk: Smoking before the first pregnancy and the risk of breast cancer: Lung cancer is by far the most common cause of cancer death in the UK [1,3].

People who smoke were first shown to be more likely to develop lung cancer than non-smokers in [4]. This study found that people who smoked around 20 cigarettes a day had 26 times the lung cancer risk of non-smokers.

And people who smoked around 3 cigarettes a day still had 6 times the lung cancer risk of non-smokers. After these first results came out, UK scientists began a large long-running study of smoking in British doctors, which Cancer Research UK has helped to fund, that has told us a lot about the dangers of smoking [5].

This study has found similarly huge risks associated with smoking. Men who smoked 25 or more cigarettes a day had over 24 times the risk of dying from lung cancer as men who had never smoked [6].

There are long time lags between changes in the number of people who smoke and the number of people who develop lung cancer due to smoking [7—9]. So rates of lung cancer in the UK reflect smoking rates decades earlier.

But research has shown that lung cancer risk is greatest among those who smoke the most cigarettes, over the longest period of time, having started at the youngest age [9,10]. Although both have an effect on risk, the number of years someone has spent smoking is more important than the number of cigarettes they smoke a day [11].

This means that overall, smoking 20 cigarettes a day for 20 years is even worse for you than smoking 40 a day for 10 years. Lung cancer mortality statistics. Doll R, Hill AB. Smoking and carcinoma of the lung: The mortality of doctors in relation to their smoking habits: One study found that people who smoked up to 4 cigarettes a day were about 50 per cent more likely to die prematurely than non-smokers [1].

And the Million Women study found that women who smoked up to 10 cigarettes a day were twice as likely to die prematurely than non-smokers [2]. Large studies looking at the health risks of smoking, such as the British Doctors Study and the Million Women Study, have found that people smoking between 1 and 14 cigarettes a day are at least 7 times as likely to die from lung cancer compared to people who have never smoked [2—4].

And one study found people who smoked between 5 and 9 cigarettes a day had a higher risk of dying from lung cancer, or any type of cancer [1]. Bjartveit K, Tverdal A.This glossary provides the wildland fire community a single source for wildland fire and incident management terminology commonly used by the NWCG and its subgroups.

Secondhand smoke (also known as environmental tobacco smoke) is the smoke a smoker breathes out and that comes from the tip of burning cigarettes, pipes, and cigars.

It contains about 4, chemicals. As with active smoking, the longer the duration and the higher the level of exposure to secondhand smoke, the greater the risk of developing lung cancer.

The hazards of second hand smoke to non smokers

4 Secondhand Smoke Causes SIDS Sudden Infant Death Syndrome (SIDS) is the sudden, unexplained, unexpected death of an infant in the first year of life. Diseases and Death Smoking leads to disease and disability and harms nearly every organ of the body.

1 More than 16 million Americans are living with a disease caused by smoking. Secondhand smoke is the combination of smoke that comes from a cigarette and smoke breathed out by a smoker. When a non-smoker is around someone smoking, they breathe in secondhand smoke.

Secondhand smoke . Association between exposure to second-hand smoke and telomere lengthControl Your Aging · Accurate DNA Test · SimpleTypes: Advanced Ancestry, TeloCoach, Telomere Supplements.

Passive smoking - Wikipedia