Asthma I was very interested on the use of cannabis to treat asthma. It just didnt seem right to me that cannabis could treat asthma due to the amount of coughing i do when inhaling through smoking or vaping,so i did some research. Here are some things i found. The New England Journal of Medicine, a peer-reviewed medical journal, published a 1973 study titled "Single-Dose Effect of Marihuana Smoke. Bronchial Dynamics and Respiratory-Center Sensitivity in Normal Subjects," by L. Vachon et al., that stated: "Marijuana smoke, unlike cigarette smoke, causes bronchodilatation [expansion of the air passages] rather than bronchoconstriction [narrowing of the air passages] and, unlike opiates, does not cause central respiratory depression. Donald P. Tashkin, MD, Professor of Pulmonary Care at the University of California, Los Angeles, stated in a 1975 article titled "Effects of Smoked Marijuana in Experimentally Induced Asthma" in the American Journal of Respiratory and Critical Care Medicine: " After exercise induced bronchospasm, [exercise-induced asthma] placebo marijuana and saline were followed by gradual recovery during 30 to 60 min, whereas 2.0 per cent marijuana...caused an immediate reversal of exercise-induced asthma and hyperinflation." Daniele Piomelli, PhD, Professor of Pharmacology at the University of California at Irvine, told Reuters in 2000: "We think that by targeting cannabinoid receptors in the upper airways we can control coughs in a number of conditions...That's important because most treatments currently available basically act on the brain cough center, a small region of the brain that is the target for codeine and similar drugs ." Normally when i can feel myself starting to have an onset of asthma related breathing problems i tend to blame cannabis and as a result lay off for a few days.During those few days my breathing tends to take a turn for the worse.Going to look into those strains mentioned for treating asthma and see if vaporizing in small amounts will help me.If you have anymore strains with good results for treating asthma post them please.