One of the studies makes the link directly, but increased maternal age is linked to other factors (like increased socioeconomic status). That makes it very difficult to differentiate pre-birth environmental factors from post-birth environmental factors.
Maybe wealthier (and usually older) moms are slathering on the sunscreen, thus leading to Vitamin D deficiency. Or a thousand other possibilities.
It would seem to point to something other than pure genetics, though.
Jess, if it makes you feel better, autism is often linked to the *father's* age
Maybe wealthier (and usually older) moms are slathering on the sunscreen, thus leading to Vitamin D deficiency. Or a thousand other possibilities.
It would seem to point to something other than pure genetics, though.
Jess, if it makes you feel better, autism is often linked to the *father's* age
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