The research
Ten studies, graded. One reaches Promising. That distribution is the honest picture of this field.
Every study card carries a written limitations section. A study without one does not appear here, and that rule is enforced in the page template rather than in a style guide.
A conflict of interest worth stating plainly: much of the grounding literature shares overlapping authors, and several of those authors have had commercial relationships with a company selling grounding products. That is not a reason to dismiss the findings. It is a reason to want them replicated by someone unconnected, which for most of them has not yet happened.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.