Now that it is 2012, Primatene Mist is no longer available for purchase. With no over-the-counter asthma inhalers, asthma patients must now seek prescription-based relief.

Past research has shown that living close to busy roadways increases the risk of asthma in developed countries. Now, a new study shows that the same holds true Peru, a developing country.

Once asthma and lung disease patients leave the hospital and are no longer under the supervision of physicians, they are likely to misuse their respiratory inhalers, according to new research.