A dream where you eat something may suggest that there is something missing in your life, or you are looking for some kind of fulfillment in some way. It could also symbolize new ideas.
To eat within a social setting implies that you have good relationships with others or you are experiencing feelings of joy.
If you are eating on your own then it suggests you may feel lonely or depressed, or are looking for the company of others.
If you decline food in the dream then it implies that you are not willing to embrace change in some way or are isolating yourself from others. It may also imply you have some kind of inner conflict, maybe you are unhappy with your body in some way.
If someone takes your food away from you then it suggests that you may have jealous or envious people in your life.
If you get eaten in the dream then it suggests that you are feeling victimized or fearful or something in your life.