Reduced uptake of smoking by children would save lives chiefly after 2050. Quitting works: even those who stop smoking in their 40’s lower their risk of death remarkably, and those who quit in their 30’s have death risks close to lifelong non-smokers.
但是过去的吸烟死亡并非一定是世界的将来。我们知道如何控制烟草使用。为了在未来几十年中降低吸烟死亡人数，现在需要十一亿人戒烟。降低儿童吸烟将会主要在2050年后挽救性命。戒烟是有成效的。即使那些在四十多岁戒烟的人也可以极大地降低死亡风险，而那些在三十多岁戒烟的人的死亡风险和终生不吸烟的人接近。