限制燃油中硫的含量似与多种原因引起的病死率明显下降有关。尤其是呼吸系统或心血管原因造成的病死率下降最为明显。 以往的报道表明,空气污染物如二氧化硫对健康有副作用。然而,很少有机会证明降低空气中二氧化硫的水平确突能提高暴露于受污染空气中的人群的健康状况。 Limiting the amount of sulfur in the fuel may be associated with a significant reduction in mortality due to a number of causes. In particular, the decline in mortality due to respiratory or cardiovascular causes is most pronounced. Past reports show that air pollutants such as sulfur dioxide have health side effects. However, there is very little chance of reducing the level of sulfur dioxide in the air to enhance the health of people exposed to polluted air.