There are both healthy and satisfying ways to handle the many food cravings that pregnancy may bring to expectant mothers. Food cravings during pregnancy are believed to be caused by hormonal changes that occur in the body. Generally, the first trimester is when the majority of cravings occur, but it is not uncommon for those cravings to last for the duration of the pregnancy. Finding ways to cope with overwhelming food cravings can be challenging for the mom-to-be, however, with some effort a healthy nutritional balance can be achieved.