Foods craving are very common during pregnancy and may vary a lot during the pregnancy or from one pregnancy to the next one. A woman fond of certain foods may not like them at all during pregnancy. On the other hand a pregnant woman may develop carvings for foods that she never liked before pregnancy. Although the reason for these cravings is not well known but hormonal changes are believed to be responsible for these food cravings. Some pregnant women develop cravings for mud, starch and pica. Such cravings could be mainly due to the deficiency of iron or worms. Watch the video to know more about the food cravings.