The initial enthusiasm for mindfulness and meditation as the way to optimal physical and mental health has waned somewhat, and has even triggered skepticism. It seems that the physical and mental health benefits of mindfulness and meditation have been overstated, by both scientists and journalists. Here's an article that summarizes two decades of research on this topic. Here is what we do know:
This is a well written, easy-to-read article, summarizing what we know about mindfulness and meditation.