A new study from Hsien-Ho Lin and colleagues at Harvard School of Public Health reviewed the published evidence for an association between tobacco smoking, passive smoking, and indoor air pollution from fuels such as wood and charcoal and the risk of infection, disease, and death from TB.
Among hundreds of reports from electronic databases, the authors reviewed 33 eligible papers on tobacco smoking and TB, five papers on passive smoking and TB, and five on indoor air pollution and TB.
The researchers separately assessed different aspects of TB risk: TB infection as measured by a positive tuberculin skin test, TB disease, and mortality from TB. They found an approximately 2-fold increase in risk of TB infection among smokers as compared with nonsmokers.
The great majority of studies evaluating the link between active smoking and TB disease or TB mortality also showed an association, but these data could not be combined together because of wide potential differences between the studies. In addition, there was some association of TB with passive smoking, and also with indoor air pollution, though the evidence for these associations was more limited, and will need to be confirmed by further work.
The authors conclude that “TB control programs might benefit from a focus on interventions aimed at reducing tobacco and indoor air pollution exposures, especially among those at high risk for exposure to TB”.
Citation: Lin H, Ezzati M, Murray M (2007) Tobacco smoke, indoor air pollution and tuberculosis: A systematic review and meta-analysis. PLoS Med 4(1): e20.
Andrew Hyde | alfa
Collagen nanofibrils in mammalian tissues get stronger with exercise
14.12.2018 | University of Illinois College of Engineering
New discoveries predict ability to forecast dementia from single molecule
12.12.2018 | UT Southwestern Medical Center
The more objects we make "smart," from watches to entire buildings, the greater the need for these devices to store and retrieve massive amounts of data quickly without consuming too much power.
Millions of new memory cells could be part of a computer chip and provide that speed and energy savings, thanks to the discovery of a previously unobserved...
What if, instead of turning up the thermostat, you could warm up with high-tech, flexible patches sewn into your clothes - while significantly reducing your...
A widely used diabetes medication combined with an antihypertensive drug specifically inhibits tumor growth – this was discovered by researchers from the University of Basel’s Biozentrum two years ago. In a follow-up study, recently published in “Cell Reports”, the scientists report that this drug cocktail induces cancer cell death by switching off their energy supply.
The widely used anti-diabetes drug metformin not only reduces blood sugar but also has an anti-cancer effect. However, the metformin dose commonly used in the...
A research team from the University of Zurich has developed a new drone that can retract its propeller arms in flight and make itself small to fit through narrow gaps and holes. This is particularly useful when searching for victims of natural disasters.
Inspecting a damaged building after an earthquake or during a fire is exactly the kind of job that human rescuers would like drones to do for them. A flying...
Over the last decade, there has been much excitement about the discovery, recognised by the Nobel Prize in Physics only two years ago, that there are two types...
12.12.2018 | Event News
10.12.2018 | Event News
06.12.2018 | Event News
14.12.2018 | Power and Electrical Engineering
14.12.2018 | Physics and Astronomy
14.12.2018 | Physics and Astronomy