Do left-handers have a genetic advantage?
Large genome-wide studies explore whether left-handedness is linked to brain structure, connectivity, and neurological traits.
What researchers investigated
Using data from the UK Biobank, researchers analyzed brain imaging and genome-wide SNP data from hundreds of thousands of individuals, including tens of thousands of left-handers.
The study examined genetic loci associated with handedness, brain connectivity, and links to neurological conditions.
Key findings
- Increased connectivity between language networks in left-handers
- Several genetic loci linked to brain development
- Potential associations with neurological disease risk
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