From Alwyne Kennedy
So one line of investigation into the causes of schizophrenia concentrates on
the lack of sunshine-derived vitamin D in expectant mothers
(21 July, p 38).
Another line suspects some insidious side effect of flu in expectant mothers as
a causal factor. And there’s statistical evidence for both propositions.
Perhaps the side effect of flu is simply that of a pregnant woman, already on
the verge of vitamin D deficiency, spending a few crucial days indoors in bed
and out of the sun.
London
