What Causes Dyslexia?

Unveiling Dyslexia: Understanding Its Origins

Dyslexia, often misconceived as a mere reading difficulty, is a multifaceted condition influenced by various factors, including genetics, brain structure, and developmental aspects. Let’s dive into the key elements that contribute to this neurobiological condition.

Genetic Underpinnings

Research indicates a strong genetic component in dyslexia. Studies suggest that children with a dyslexic parent are more likely to inherit this condition. It's not a single gene at play; rather, a combination of genetic variations that influence language and reading-related brain functions.


Studies conducted on families and twins have revealed a strong hereditary component. Research indicates that specific genes related to brain development, particularly those associated with language processing and phonological awareness, contribute to an increased susceptibility to dyslexia.

(Scerri TS, Schulte-Körne G. Genetics of developmental dyslexia. European Child & Adolescent Psychiatry. 2010)

Brain Structure and Function

Brain imaging studies have revealed differences in brain activity and connectivity among individuals with dyslexia. Advanced neuroimaging techniques have uncovered variations in brain anatomy and activity in individuals with dyslexia, particularly in areas responsible for language processing and phonological decoding.

(Gabrieli JD. Dyslexia: a new synergy between education and cognitive neuroscience. Science. 2009)

These differences primarily manifest in brain areas associated with language processing, affecting reading fluency and comprehension. These differences suggest that altered brain functioning contributes significantly to the condition

Early Intervention

While these factors shed light on dyslexia's potential origins, it's crucial to understand that dyslexia is not caused by vision problems, intelligence deficits, or lack of effort. It's a neurobiological condition that affects the way individuals process language, impacting reading, writing, and spelling skills.


The early developmental phase significantly impacts a child's susceptibility to dyslexia. Prenatal care, exposure to language, and early learning experiences contribute to brain development and language processing abilities, influencing future reading capabilities. Understanding the multifaceted causes of dyslexia empowers educators, parents, and healthcare professionals to recognize early signs, provide tailored interventions, and create supportive environments for individuals with dyslexia. By acknowledging these underlying factors, we can foster a more inclusive approach to education and support systems for those navigating dyslexia.


If you can relate to this post, start as early as you can with your child.

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