Bid to explain pregnancy cravings

Researchers have found a strong link between anaemia and pica among pregnant teenagers.

In the study, pica behaviours and iron deficiency increased over the course of the pregnancies. "As anemia increased, so did these behaviours, but we don't know what happens first," says lead author Dr Kimberly O'Brien, professor of nutritional sciences at Cornell University in the US.

The study of 158 pregnant teenagers found that nearly

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