In terms of health and life expectancy, what is the "the great equalizer" among men and women?

In terms of health and life expectancy, what is the "the great equalizer" among men and women? Smoking. It is said that smoking is one of the main ways that women and men can live roughly the same lifetime. Smoking is just as harmful to men as it is to women and therefor it "equalizes" their chances at a long life expectancy. 

Early 18th century british industries were generally small scale and relatively unsophisticated. most textile production, for example, was centred on small workshops or in the homes of spinners, weavers and dyers: a literal ‘cottage industry’ that involved thousands of individual manufacturers. such small-scale production was also a feature of most other industries, with different regions specialising in different products: metal production in the midlands, for example, and coal mining in the north-east.two illustrations of 18t