Amazingly, you have cherry-picked the part of your source that agrees with you.
This is the full quote, including the bits you left you:
"Mindfulness meditation programs had moderate evidence of improved anxiety... depression... and pain... and low evidence of improved stress/distress and mental health–related quality of life. We found low evidence of no effect or insufficient evidence of any effect of meditation programs on positive mood, attention, substance use, eating habits, sleep, and weight."
The same source goes on to conclude,
"Clinicians should be aware that meditation programs can result in small to moderate reductions of multiple negative dimensions of psychological stress"
This is the full quote, including the bits you left you:
"Mindfulness meditation programs had moderate evidence of improved anxiety... depression... and pain... and low evidence of improved stress/distress and mental health–related quality of life. We found low evidence of no effect or insufficient evidence of any effect of meditation programs on positive mood, attention, substance use, eating habits, sleep, and weight."
The same source goes on to conclude,
"Clinicians should be aware that meditation programs can result in small to moderate reductions of multiple negative dimensions of psychological stress"