There are several other theories about why pregnancy cravings occur. One of the most widely accepted is that cravings are a way to encourage a pregnant woman to eat the nutrients she needs for a healthy pregnancy.
In some cases, eating the food a woman craves during pregnancy isn't safe. If someone is craving laundry starch, dirt, clay, or other non-food items, she needs to contact a doctor immediately. She might have a condition known as pica, which signals a nutritional deficiency that can affect both her and the unborn baby.Learn more about Pregnancy