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In a nutshell: Left-handed and mixed-handed people appear significantly more often in certain mental and neurodevelopmental disorders like autism and schizophrenia, with mixed-handedness showing the strongest association. Three factors predict higher rates of unusual handedness: neurodevelopmental conditions, disorders with early onset, and conditions affecting language function. Not all mental health conditions show this pattern—depression, dyscalculia, and pedophilia showed no significant differences in handedness compared to the general population. Left-handed people appear significantly more often among those with certain mental and neurodevelopmental disorders, according to groundbreaking research that analyzed data from over 200,000 individuals. This connection potentially offers a window into...

This is an interesting question, so I did a deep dive into the neuroscience of left-handedness and musicality, and here is what I found.

I get why i run into so much conflict here with the conformists and fearpers, etc. It all clicked into place tonight just browsing articles from across the web. God gave me the insight, I thank Him for opening my eyes. ......

While there's no righty or lefty gene, DNA does seem to play a role in handedness. In a recent study published in Brain: A Journal of Neurology, researchers at the University of Oxford looked at the DNA of about 400,000 people in the U.K. and found that four regions of the genome are generally associated with left-handedness. Three out of these four regions were involved in brain development and structure. Some researchers hope that studying the biological differences between lefties and righties could shed light on how the brain develops specializations in its right and left hemispheres... Righties have dominated...