Mindfulness has been generating much traction lately and has become somewhat of a fad. At the same time, we have solid research from medically trained Clinicians and Academics like Prof Jon Kabat-Zinn teaching mindfulness concepts in a Medical Degree.  Luckily, the research has been summarised and put into one simple publication by David S. Black, PhD here:

https://goamra.org/publications/mindfulness-research-monthly/