Original sentence: A 2013 statement from the American Heart Association said: "The overall evidence supports that TM modestly lowers BP [blood pressure]" and that TM could be considered as a treatment for hypertension, although other interventions such as exercise and device-guided breathing were felt to be more effective and better supported by clinical evidence.A 2014 Cochrane review found limited evidence for an effect in preventing cardiovascular disease.A 2014 systematic review and meta-analysis funded by the U.A 2015 systematic review and meta-analysis found that TM reduced systolic and diastolic blood pressure by 4.26 and 2.33 mm Hg, respectively, compared to control groups.Agency for Healthcare Research and Quality found that mantra meditation programs such as TM had no benefit with regard to psychological stress or well-being, although the quality of scientific evidence on TM was poor as a whole.It is currently not possible to say whether meditation has any effect on health, as the research to date has been of poor quality, including a high risk for bias due to the connection of researchers to the TM organization and the selection of subjects with a favorable opinion of TM.The American Cancer Society has stated that "available scientific evidence does not suggest that meditation is effective in treating cancer or any other disease; however, it may help to improve the quality of life for people with cancer", adding that "Research shows that meditation can help reduce anxiety, stress, blood pressure, chronic pain, and insomnia" and that "Most experts agree that the positive effects of meditation outweigh any negative reactions".The first studies of the health effects of Transcendental Meditation appeared in the early 1970s
Edited sentence: A 2013 statement from the American Heart Association said: "The overall evidence supports that TM modestly lowers BP [blood pressure]" and that TM could be considered as a treatment for hypertension.According to the presentation of research included for Wikipedia, it is currently not conclusive to say that meditation has no effect on health, as the selection of research in this entry to date has not been permitted adequate exposure in published outcomes, has been selectively reviewed and thus has been of poor quality, including a high risk for bias due to the connection of researchers to the TM organization and the selection of subjects with a favorable opinion of TM.Citing long-ago and very small group studies, the first studies of the health effects of Transcendental Meditation appeared in the early 1970s