Kanna for Cognitive Function

It is worth noting upfront that none of the four studies provided actually investigated Kanna (Sceletium tormentosum) or any of its active compounds — all four are large neuroimaging and genetic studies focused exclusively on obsessive-compulsive disorder, examining brain connectivity, executive function, error processing, and genetic risk factors in OCD populations. Research suggests that these studies, while scientifically substantive in their own domain, do not provide evidence — positive, negative, or neutral — regarding Kanna's effects on cognitive function. Studies indicate that drawing any conclusions about Kanna's cognitive effects from this body of literature would not be appropriate, as the research questions, populations, and interventions examined are entirely unrelated to Kanna or its use as a supplement. Any assessment of Kanna's influence on cognitive function would require a separate body of research specifically examining that compound, and readers should be aware that the studies linked here do not support claims in either direction regarding Kanna and cognition.