Some scientists have said that children who get autism from vaccination may been damaged because they have a reduced ability to get rid of the small amounts of toxic metals that are in some vaccines as adjuvants and additives.
The following is an excerpt from Safeminds.org.
Researchers from China have recently conducted a systematic review and meta-analysis of 53 studies that explore the association between exposure to four heavy metals: cadmium (Cd), lead (Pb), arsenic (As), and mercury (Hg), and the occurrence of autism spectrum disorder (ASD) in children.
The results showed that compared to healthy control groups, ASD groups had significantly higher body burdens of Cd, Pb, As, and Hg.
Further subgroup analysis revealed that the concentrations of these four heavy metals were higher in the ASD group, irrespective of testing methods.
Based on previous studies, the authors suggest that this finding could be due to ASD patients’ reduced ability to excrete heavy metals.
The study also indicated that heavy metal exposure during children’s growth could potentially epigenetically affect DNA methylation and cause oxidative stress and inflammatory response.
The authors call on future research to focus on the biological mechanisms of heavy metal exposures inducing ASD.
Read research article here.