Is dyslexia genetic?
Dyslexia is most likely caused in part by genetics. Because dyslexia tends to run in families, we know this. However, it isn't entirely genetic. Because identical twins have identical DNA, they would always match if dyslexia was 100 percent genetic. They are frequently both affected by the condition, however, this is not always the case. There is no such thing as a "dyslexia gene." Over 40 genes have been linked to dyslexia in some way at this stage! 3–6 Each gene is likely to have a minor effect on its own. There isn't actually a single "dominant" or "recessive" gene in a genetically complex illness like this one. The genes linked to dyslexia are involved in a variety of functions. Many of these genes have an impact on how brain cells communicate with one another.
Even while we've made progress, we still need to do a lot more research to fully understand how genetic alterations might lead to dyslexia.
Is there a link between stress and dyslexia during pregnancy?
We have no idea. Stress during pregnancy may have an impact on a child's reading abilities, as well as memory and IQ scores9,10. However, few people have focused on dyslexia specifically. Other health hazards, such as smoking during pregnancy, the weight of a newborn, and the parents' ages3, have been related to dyslexia. So it's plausible that stress has an impact as well, but we can't say for sure. Many distinct health factors, similar to how genes work, are likely to have minor effects on their own.
Is it possible for omega-3 fatty acids to reduce the incidence of dyslexia?
That is also something we are unaware of. However, many scientists have attempted to discover out. When some dyslexic youngsters showed evidence of being deficient in omega-3 fatty acids, scientists became interested in the link between these nutrients and dyslexia. They wanted to see if feeding dyslexic children omega-3 supplements would help them read better. Omega-3 fatty acid supplements have been shown in a number of studies to aid children who are dyslexic (or have similar diseases such as ADHD)8,17–20. However, the differences are usually minor and are dependent on the specific supplements utilized.
Other studies, on the other hand, have found that omega-3 fatty acids have little effect on reading or learning, Most scientists think that there isn't enough data to suggest that omega-3 fatty acids can aid with dyslexia treatment and that more research is needed. (It's also unknown whether omega-3 fatty acids taken during pregnancy can lower the incidence of dyslexia.) However, they may be beneficial to brain growth and may increase IQ scores in children later on. We know that fatty acids are abundant in the brain and that omega-3 fatty acids are essential for brain development. This is due to the fact that fatty acids can have a significant impact on the membranes of brain cells, affecting how well these cells function.
Omega-3 fatty acids, on the other hand, may have the ability to influence genes. They don't alter the DNA of the genes, but they can influence how "on" some genes are. It will require further research to determine whether these alterations have an impact on the brain.
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