You’re low in iron or zinc
Pregnant or not, pica can be a sign that you’re lacking essential minerals, most often iron or zinc. It’s important that you seek treatment. Besides being a possible sign of an underlying nutritional deficiency, this disorder can lead to stomach or intestinal obstructions. Don’t think that this problem doesn’t affect you if you don’t live in an underdeveloped country. “It’s more common that you think,” says Chernoff.