Asperger Syndrome and Autism
Though autism's causes are murky, one thing about the syndrome is clear: it runs in families. Some people with autism, by and large males, have fragile X syndrome, which leads to mental retardation. Most recent thought among most stipulates that the causes of Asperger syndrome are the same as those of autism. Some disagree, arguing that Asperger syndrome and autism have different causes.
Autism Disorder
Autism, also referred as infantile autism or autistic disorder, is a lifelong disorder that causes abnormal neurological development. The causes of autism are poorly understood, although it is clear that autism is a biological brain disorder. Autism signals impairments in communication, ability to learn, and social relatedness. It has become clear that genetic elements contribute significantly to the presence of the disease.
Possible Causes of Autism
Though autism's causes are murky, one truth about the syndrome is clear: it runs in households. Congenital rubella, HIV, and herpes simplex have all been implied as probable autism causes. While the causes of autism still continue a mystery, it has become clear that genetic factors contribute prominently to the occurrence of the disorder. The causes of autism have long baffled investigators and frustrated parents. Theories in regards to possible autism causes include genetics, environmental toxins, infections, and even vaccinations. Many additional hypotheses, such as the consumption of folic acid in pregnancy, have been proposed as likely causes of autism. Infection of pregnant woman with "wild" rubella virus is one of the few known causes of autism. A peptide found in schizophrenia and autism signals behavioral changes in rats. There are other mechanisms of autism besides peptides, although maybe as much as 80% are peptide mediated.
MMR vaccination
Contemporary scientific evidence does not demonstrate that MMR vaccine, or any combination of vaccines, signals the development of autism, including regressive forms of autism. Anyhow, a small but vocal group of parents have taken to saying that thimerosal causes autism. If thimerosal causes autism, the prevalence of the disorder should have declined as the chemical was removed from vaccines. This is not supported by the realities. Current scientific evidence does not show that MMR vaccine, or any combination of vaccines, causes the development of autism, along with regressive forms of autism. However, determination of whether MMR vaccination causes autism is best made by studying the incidence of autism in both vaccinated and un-vaccinated children. These studies supply little evidence to validate a hypothesis that MMR vaccination leads to autism. Even if measles virus were consistently shown to be present in intestinal specimens of children, this would not conclusively hint that that measles causes autism. Therefore, these findings return evidence against the hypothesis that MMR vaccination causes autism. Many parents blame vaccines for the explosion in autism, which causes bizarre repetitive behavior and an inability to establish emotional ties. There is a theory out there that MMR vaccination with thimerosol causes autism in young children.
No one knows precisely what leads to Autism Spectrum Disorders (ASDs), but scientists believe that both genetic and environmental components may play a role. Until the mid 1990's, probing into the causes of autism was limited to a few dedicated individuals who attained little funding. During the 1990s, there has been an extensive drive to promote research into the causes of autism. Autism is a neurological disease that causes impairments in communication, ability to learn, and social relatedness. Simply put, autism affects a child to escape into an inner world. Little is known in regards to the causes, care and prevention of autism. Because the primary causes of autism in children are not well understood, targeted prevention is difficult. The Autism Research Center (www.autismresearchcentre.com) conducts research and disseminates results on the causes of autism and on methods of averting, diagnosing and treating the disease. Research shows that there may be several different autism causes. Amazingly, it took a good number of years for researchers to ultimately say without an uncertainty that cold parents are not one of the Autism causes. Patients, researchers and Physicians from around the world have banded together to commence to crack the mystery of what causes autism. The good news is that research is beginning to reveal autism's causes and signs, in particular evidence of a genetic link. This research reflects a shift in scientific thinking about what causes autism, and a push to look harder at potential environmental influences.
Autism Research
NIH research on likely genetic, infectious, immunological, and environmental causes and mechanisms of autism carries on. Examination into the causes of autism spectrum disorders is being fueled by recent research developments. The U.S. Health and Human Services (HHS) carries on to support researching into the causes and treatments for autism spectrum disorders. The CDC is committed to protecting the well being of children and to recognizing the biological and environmental causes of autism and other developmental disabilities. The nice news is that research is appearing to reveal autism's causes and signs, in particular evidence of a genetic link. For instance, there is a global research project aiming to pin down the genetic causes of autism by studying 6,000 DNA samples from families affected.
New Autism Research Clues
Probable molecular causes of autism and other neurological disorders may be associated with mis-folding of proteins. NICHD researchers are looking into a variety of possible causes for both early onset and regressive autism. Some people with autism have mutations in the Pten gene, but it is unclear if that's what causes the disorder. Because autism itself and its causes are so perplexing, the international symbol for autism is a puzzle piece. It is mainly accepted that autism is caused by abnormalities in brain structures. Although researchers aren't sure just what causes the brain's wiring to go awry, reports indicate that autism's bases lie in a person's genes. Over-emphasis on genetic aspects may not take sufficient account of several causes that are needed to explain the diverse types of autism. Even for the autism-spectrum disorders with known genetic causes, the molecular mechanism of pathology is not well understood. Studies of a Massachusetts town have attributed autism to congenital environmental causes. In some cases, autism may lead to the body's natural painkillers, called endorphins, to go overly far in suppressing feeling. Likely several causes and etiological pathways lead to disorders in the autism spectrum. Genetic factors and brain abnormalities at birth are considered to be some of the most recognized causes of autism. Most believe autism to have several probable causes. In the effort to identify autism's causes, researchers had long sought to pinpoint exactly when the disorder begins. A peptide found in schizophrenia and autism causes behavioral changes in rats. In truth, the only proven genetic causes of autism to date are well-defined syndromes like the Fragile X chromosome anomaly.
Conclusion
The popular theory now is that people can be born with a genetic predisposition that, coupled with a small amount of environmental trigger, causes autism. Due to the fact that the disorder is so complex, and because no two people with autism are precisely alike, autism is likely the result of many causes. Nothing will make the search for autism's causes uncomplicated. We don't know exactly what causes autism, but we do understand that both genes and environment are involved. There is no theory of the cause of autism which everyone has found convincing. However, parenting behaviors are not the trigger or a contributing factor to the cause or causes of autism.
