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Smokers may have higher risk of
HIV
London -
Smoking, already linked to several illnesses, may also increase the
risk of infection with HIV, the virus that causes AIDS, researchers
said on Thursday.
In a review of studies that looked at
the association between smoking and HIV, British doctors said five of
the six studies they analysed showed smokers had a higher chance of
becoming infected.
Nine of 10 other studies in the
review that tracked the progression from HIV to AIDS found no link
with smoking.
"The studies identified in this
systematic review indicate that while smoking might be independently
associated with acquiring HIV infection, it does not appear to be
related to progression to AIDS," said Dr Andrew Furber, of the South
East Sheffield Primary Care Trust.
Furber
and his colleagues, who reported the findings in the journal Sexually
Transmitted Infections, said tobacco smoke may increase susceptibility
to HIV infection by modifying a variety of immune system responses.
Research has shown that smoking is a
leading cause of preventable death. It increases the risk of heart
attack and stroke, respiratory problems, lung and other types of
cancer.
The researchers suggest in the study
that public health measures that encourage smokers to quit could also
improve the effectiveness of HIV/AIDS prevention programmes.
About 40 million people worldwide are
living with HIV/AIDS. Nearly 5 million were newly infected in 2005 and
more than 3 million adults and children died of AIDS in the same year. --
Reuters Limited
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