A study conducted by the Department of Graduate Studies and Research for the Canadian Memorial Chiropractic College in Ottawa, Ontario looks into the current state of evidence for chiropractic care, specifically in the management of asthma and to a lesser extent allergy. The study found that many of the claims of chiropractic success in asthma have been primarily based on anecdotal evidence or uncontrolled case studies. Three studies reported on different randomized controlled studies showing benefits in subjective measures, such as quality of life, symptoms and bronchodilator use. However, the differences were not statistically significant between controls and treated groups. There were also no significant changes in any objective lung function measures. The study concluded that were is currently no evidence to support the use of chiropractic SMT as a primary treatment for asthma or allergy. Based on reported subjective improvement in patients receiving chiropractic care, certain clinical circumstances may warrant a therapeutic trial in patients with asthma. Further properly designed, collaborative research is needed to determine if there is a role for chiropractic SMT in the care of asthma or allergy.