See also: The Interwoven Global Epidemics of Mercury Toxicity and Autism
Original here: https://worldmercuryproject.org/news/two-meta-analysis-reviews-reconfirm-yet-again-the-link-between-mercury-and-autism-spectrum-disorder/
Two Meta-Analysis Reviews Confirm (Yet Again) the Link between Mercury and Autism Spectrum Disorder
By Robert F. Kennedy, Jr.
Mercury is a potent neurotoxin. Even the smallest amounts can cause cumulative adverse effects. Two of the most widespread forms of mercury exposure comefrom the organic compounds methylmercury (found in fish) and ethylmercury, which makes up 50% of the vaccine preservative thimerosal. The Agency for Toxic Substances and Disease Registry (ATSDR) affirms that young children and fetuses are particularly sensitive to harmful mercury-related effects such as “brain damage, mental retardation, incoordination, blindness, seizures and inability to speak.” This calls into question public health authorities’ aggressive peddling of annual flu shots—many of which contain thimerosal. The influenza vaccine guidelines target all children who are at least six months of age, with two closely spaced doses recommended for very young children in their “first season of vaccination.” They also target pregnant women and women who “might” be pregnant.
Organic mercury can cross the blood-brain barrier, and numerous studies have fingered it as a major offender in increasing the risk of neurodevelopmental disorders such as autism spectrum disorder (ASD), tic disorders, delayed language and attention-deficit/hyperactivity disorder (ADHD). Shamefully, the Centers for Disease Control and Prevention (CDC) refuses to admit that mercury is an ASD risk factor. Instead, it has been left up to other researchers to continue to focus attention on the compelling relationship between mercury and ASD.
Taking stock across studies
Two 2017 studies perform a valuable service by systematically reviewing the totality of published mercury-ASD evidence that has accumulated over the past dozen or so years, in particular. The two studies both come out of Iran, and both employ a technique called meta-analysis, which is a quantitative systematic review. Meta-analytic studies seek to take a step back and draw rigorous conclusions about comparable studies as a group. A key benefit of this approach is that it can consolidate “a large, and often complex, sometimes apparently conflicting, body of literature.”
The meta-analysis approach is a very appropriate tool for taking stock of published studies that compare mercury levels in ASD individuals and healthy controls without ASD. The first meta-analysis (published in the Journal of Trace Elements in Medicine and Biologyby Tina Jafari and other researchers at Iran’s Shahrekord University of Medical Sciences) focuses exclusively on mercury. The second study (published in Progress in Neuropsychopharmacology and Biological Psychiatry by Amene Saghazadeh and Nima Rezaei at the Tehran University of Medical Sciences) examines mercury along with other heavy metals such as lead. Both research teams used state-of-the-art statistical techniques to produce unbiased results.
CONTINUES HERE: https://worldmercuryproject.org/news/two-meta-analysis-reviews-reconfirm-yet-again-the-link-between-mercury-and-autism-spectrum-disorder/