Asthma, a respiratory condition that develops when air passages in the lungs are inflamed and airways narrow, kills some 5,000 people in the United States annually. The World Health Organization (WHO) estimates that 255,000 people died of asthma world-wide in 2005. Of these, 80 percent occurred in low and lower-middle income countries.
Currently, experts are struggling to understand why the number of asthma sufferers is rising by an average of 50 percent every decade worldwide. In the United States alone, according to the WHO, the number of asthmatics has leapt by over 60 percent since the early 1980s.
These numbers prove that asthma is an increasingly social disease. Neutral environmental factors, cold weather and pollen, for example — are responsible for some 60 percent of asthma attacks. However, an alarmingly disproportionate number of asthma-related deaths come from children of low-income, inner-city households.
