Secondhand smoke may kill 2 million in China

WASHINGTON - Nearly 2 million older people alive today in China are likely to die from emphysema and other chronic lung diseases caused by second-hand smoke, researchers predicted on Thursday.
Their estimates are part of a series of studies showing that chronic obstructive pulmonary disease, or COPD, is far more common than had been recognized around the world and will present a serious problem for health officials.
COPD includes emphysema, chronic bronchitis and some types of serious chronic asthma. Smoking is by far the leading cause.