No offense but your claim is absurd. Other than placebo effect, there are no accepted benefits of "meditation" (whatever that means) within the scientific community.
However in the new age, gluten-free communities...
1) only describe observational correlations, not causation (such studies are useful for guiding further research, but are a poor basis for recommending lifestyle changes)
2) describe an intervention leading to a statistically significant change, but one whose practical significance is negligible, unsubstantiated, or an unclear mixture of benefits and drawbacks
3) quality too poor to draw any firm conclusion at all (too small, no control group, neglect of known likely confounders, blatant p-hacking, etc.)