In GBD 2016, we also improved the estimation of burden attributable to second-hand smoke. At the global level, while the burden of second-hand smoke remains substantial, exposure to second-hand smoke has been declining significantly at an annualised rate of change of 1·9% (1·5–2·4). These reductions are likely attributable to a wide range of public health measures to control tobacco, which have accelerated in a large number of countries since the implementation of the Framework Convention on Tobacco Control (FCTC).31
