A genetic vulnerability may also explain why some people are affected by
prenatal exposure to infections.
Not exact matches
But scientists are accumulating a growing list of other risk factors that predispose people
to this condition, including
prenatal exposure to famine conditions, certain
infections or
exposure to lead.
Low birth weight may well be a reflection of other causal factors - for example, delayed fetal development due
to genetics,
prenatal exposure to alcohol, toxins, or
infections, poor
prenatal nutrition.
The finding wasn't surprising, Fallin explains — numerous studies have identified abnormal gene expression of immune genes in autism samples and environmental experiences such as
prenatal infection or
prenatal exposure to pollutants that can ramp up immune responses are risk factors for ASD.