Smoking causes one in ten deaths globally, major new study reveals | Society

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One in 10 deaths around the world is caused by smoking, according to a major new study that shows the tobacco epidemic is far from over and that the threat to lives is spreading across the globe.

There were nearly one billion smokers in 2015, in spite of tobacco control policies having been adopted by many countries. That number is expected to rise as the world’s population expands. One in every four men is a smoker and one in 20 women. Their lives are likely to be cut short – smoking is the second biggest risk factor for early death and disability after high blood pressure.

The researchers found there were 6.4m deaths attributed to smoking in 2015, of which half were in just four populous countries – China, India, USA, and Russia.

Major efforts to control tobacco have paid off, according to the study published by the Lancet medical journal. A World Health Organisation treaty in 2005 ratified by 180 countries recommends measures including smoking bans in public places, high taxes in cigarettes and curbs on advertising and marketing.

Between 1990 and 2015, smoking prevalence dropped from 35% to 25% among men and 8% to 5% among women. High income countries and Latin America – especially Brazil which brought in tough curbs on tobacco – achieved the biggest drops in numbers of smokers.

But many countries have made marginal progress since the treaty was agreed, say the authors of the study from the Institute of Health Metrics and Evaluation at the University of Washington in the US. And although far more men smoke than women, there have been bigger reductions in the proportions of men smoking also, with minimal changes among women.

Senior author Dr Emmanuela Gakidou said there were 933m daily smokers in 2015,…

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