1 Joan, Princess of Wales, in the 13th century, the wife and consort of Llywelyn the Great, the Prince of Wales; and the daughter of King John of England. Joan, Princess of Wales, in the 13th century, the wife and consort of Llywelyn the Great, the Prince of Wales; and the daughter of King John of England.
1 More than 90% of COPD deaths occur in low- and middle-income countries. 2  The primary cause of COPD is tobacco smoke (through tobacco use or second-hand smoke).  The disease now affects men and women almost equally, due in part to increased tobacco use among women in high-income countries.
Popcorn lung has never been diagnosed in smokers â or at least not because of smoking. People who work in the factories and inhale it directly are the only ones diagnosed with it. That means diacetyl present in cigarettes does not cause popcorn lung, right? May be, but we are not completely certain about it as more research is required.