49.（On current trends, some 20 t0 25 per cent of women who smokewill die from their habit. One in three of these deaths will beamong women under65 years of age. ）The US Surgeon General has estimated that, amongst these womensmoking is responsible for around 40 per cent heart disease deaths, 55 per cent oflethal strokes and, among women of all ages, 80 per cent of lung cancer deaths and30 per cent ofall cancer deaths. Over the last 20 years, death rates in women fromlung cancer have more than doubled in Japan. Norway, Poland, Sweden and theUnited Kingdom; have increased by more than 200 per cent in Australia, Demarkand New Zealand; and have increased by more than 300 per cent in Canada and theUnited States. There are dramatically increasing trends in respiratory cancer among women indeveloped countries, and the casual relationship of smoking, rather than airpollution and other factors. to lung cancer is very clear.
依照当前的趋势，大约百分之二十至百分之二十五的女性会死于吸烟恶习。死亡人数的三分之一将是65岁以下的女性。
