Another way to mess up a fetus: low folate causes ADHD

Via Science Daily,

A study published in an upcoming issue of The Journal of Child Psychology and Psychiatry finds that low maternal folate levels is linked to the development of attention-deficit/hyperactivity problems in children at age seven to nine years.

They also had a smaller head circumference at birth. I wonder if it's time to bump up the folate levels in bread, and maybe add it to other foods. It seems to help a bunch of things, and I don't know of overdose problems.