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22.01.2015

What causes adhd in pregnancy, ringing in control systems - Plans Download

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Parents and teachers have long known how children experience ADHD: as difficulty in sustaining attention, controlling impulses, or following through with tasks. Studies conducted over the past two decades have shown that the likelihood of a child having ADHD increases with exposure to certain environmental conditions that are present before or shortly after birth. Among the most interesting discoveries scientists have made about ADHD is that it tends to run in families. But they’ve gone even further, identifying at least 2 and possibly 4 genes that are very likely associated with ADHD behaviors. This idea of a continuum is an important one, because it suggests that ADHD is not an abnormality. Because scientists are by nature curious people, they have not been satisfied to find that most ADHD cases are rooted in genetics; they have also tried to find out why.
When I put all this information together, I find myself coming to three conclusions about children and ADHD. Resources For ParentsPDF with a listing of helpful books, websites, and downloadable free publications on children and ADHD. For the study, pregnant mice were placed in a cage with a mobile phone on a muted active call. More recently, scientists have begun to define what ADHD actually is, describing it in neurological terms as variations in the way certain parts of the human brain function and communicate.


Ultimately this became particularly visible in a school environment, where the children who were adept at solving problems and planning tasks became labeled with terms such as “good students” while the distractible, quick responders became referred to as “kids with ADHD.” These ideas appear to be more than speculation.
First, if the evolutionary perspective is accurate, then the 80% of ADHD cases that are inherited have resulted from genetic adaptations that developed over tens of thousands of years. A study by the Yale School of Medicine was released this week that indicates exposure to radiation from mobile phones in utero can affect brain development in little ones, causing behavioral issues like ADHD in their adult life.
Even more recently, they have succeeded in moving beyond a description or definition to an understanding of where ADHD comes from, its roots and its causes.
The ADHD risk is also elevated if the pregnant mother abuses alcohol or drugs, but the substance that presents the highest risk is nicotine.
Unfortunately, a far greater number of children have developed ADHD through injuries of a much different and more profound kind: early childhood traumas inflicted on them by their parents or other adults. A study of families found that among people diagnosed with ADHD, approximately 80% had first-degree relatives (mother, father, child, or sibling) who also exhibited symptoms. Thus far, researchers have identified multiple factors that appear to increase a child’s risk of developing ADHD symptoms.
Compared to nonsmokers, mothers who do smoke during pregnancy are more than 3 times more likely to have children with ADHD symptoms, a rate that is somewhat lower when the children are girls but higher among boys. Yet another research project consolidated the data from multiple studies, determining that when one family member had ADHD, the probability that another also had it ranged from 55% to 90% with an average (again) of 80%.


Those at one end can effectively control their behaviors now in order to receive or avoid consequences later; these people experience few if any ADHD symptoms.
In fact, it is a condition not qualitatively or categorically different from normal at all, but likely to be the extreme lower end of a normal trait; thus the difference [between people with and without ADHD] is really just a matter of degree and not a truly qualitative difference from normal” (76).
The studies reported that while 5-6% of American children exhibited signs of ADHD, the number among the aborigine children was closer to 50%. This suggests that ADHD is less a “disorder” than an artifact, one that has occurred because human culture has evolved more rapidly than the human genome. Despite anecdotal reports, there is little research support for claims that ADHD is associated with several other “substances,” including sugar, yeast, gluten, and vitamins.
To put all this another way, researchers have established with a reasonable degree of certainty that roughly 4 of every 5 ADHD cases are hereditary and therefore genetic in origin.
Those at the other end are far less able to control their attention and impulses based on expected benefits or risks; they exhibit ADHD behaviors far more often and more intensely than people elsewhere on the continuum. Second, most ADHD cases associated with environmental factors – especially those that result from trauma – also represent adaptations, but not of the species.



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