“There are children that are born with horseshoeheads, Hydrozephaly.
You can in most cases revert this to the fact, that the mother was terribly bored in the first weeks of pregnancy.
Because boredom drains the head, the empty head also drains the abdomen. The abdomen does not develop tautly enough. The head will swell, become a horseshoehead.” (Rudolf Steiner)
Source: Rudolf Steiner, GA348, page 182