Serious researchers have been able to correlate fetal exposure to chemical compounds called organochlorine chemicals with an 80 percent increase in a future autism diagnosis. Kristen Lyall, ScD, is an assistant professor in Drexel University’s A.J. Drexel Autism Institute.

Although production of organochlorine chemicals was banned in the United States in 1977, these compounds can remain in the environment and become absorbed in the fat of animals that humans eat, leading to exposure.

Continue reading:  Scientists are linking chemicals produced in the 1970s to increased autism today—not vaccines