Anti-smoking measures have saved roughly 8 million US lives
since a landmark 1964 report linking smoking and disease, a study
estimates.
Yet the nation's top disease detective says dozens of other countries do a better job on several efforts to cut tobacco use.
The study and comments were published online on Tuesday in the Journal of the American Medical Association.
This
week's issue commemorates the 50th anniversary of the US surgeon
general report credited with raising alarms about the dangers of
smoking.
In one study, researchers used national health surveys
and death rates to calculate how many deaths might have occurred since
1964 if Americans' smoking habits and related deaths had continued at a
pace in place before the report.
More than 42 per cent of US adults smoked in years preceding the report; that rate has dropped to about 18 per cent.
The researchers say their calculation - 8 million deaths - equals lives saved thanks to anti-smoking efforts.
Their
report also says tobacco controls have contributed substantially to
increases in US life expectancy.
For example, life expectancy for
40-year-olds has increased by more than five years since 1964; tobacco
control accounts for about 30 per cent of that gain, the report says.
The
conclusions are just estimates, not hard evidence, but lead author
Theodore Holford, a biostatistics professor at Yale University's school
of public health, said the numbers 'are pretty striking'.
Yet
smoking remains a stubborn problem and heart disease, cancer, lung
ailments and stroke - all often linked with smoking - are top four
leading causes of death in the US.
The US Centers for Disease Control says about 443,000 Americans still die prematurely each year from smoking-related causes.
'Tobacco
is, quite simply, in a league of its own in terms of the sheer numbers
and varieties of ways it kills and maims people,' Dr Thomas Frieden,
the CDC's director, wrote in a JAMA commentary.
Frieden said the
US lags behind many other countries in adopting measures proven to
reduce tobacco use, including graphic health warning labels on
cigarettes, high tobacco taxes and widespread bans on tobacco
advertising.
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