A recent systematic review has been touted as demonstrating that "mind-body" practices like yoga can reprogram our DNA. There are several reasons to doubt these claims, not the least of which is the history of bias in past studies on this topic.
As quackery in the form of "integrative medicine" has increasingly been "integrated" into medicine, medical journals are starting to notice and succumb to the temptation to decrease their skepticism. The BMJ, unfortunately, is the latest to do so. It won't be the last.