Is developmental language disorder genetic?

Yes, genetics play a significant role in the development of DLD. Studies show that children with close family members who have language difficulties, dyslexia, or learning disorders are at higher risk.

Twin and family studies suggest that multiple genes are likely involved, each contributing a small effect on how the brain processes language. However, genetics alone do not determine DLD—environmental influences, such as access to early support, also shape outcomes.

Understanding genetic risk can help parents act early with screening and therapy.

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