US counties with higher rates of rainfall also have higher rates of autism, according to a controversial new study published by the American Medical Association. Pollutants in the precipitation, longer periods spent watching television, lower levels of vitamin D, or some other environmental factor linked to rainfall may trigger autism in some children, reports USA Today.
Some experts are skeptical about the findings. "It does not seem plausible," said the president of the Autism Society of America. But the author of the study said scientists have become "much more open to an environmental trigger" in autism.