Why do we sometimes get food cravings?

Question

For the last month or so, I have been craving green olives. I eat them and then think I am satiated, and in a week, I am craving green olives again.
When I was pregnant about 20 yrs ago, I wanted canned tomato's all of the time
I am not pregnant now, but would love to have a pizza covered in green Olives.

I did not like olives until I got these cravings. I used to specifically ask to have them kept off of everything.

Answer 1

it is your body lacking some mineral or vitamin in that food that makes you hungry for it

Answer 2

I have heard that we sometimes crave what our body is lacking in...a certain vitamin or mineral. I don't know if there is any truth to this, but it sounds good when those ice cream cravings come along...=)

Answer 3

Cravings happen because your brain thinks about the food you love or see. You may not be hungry and still crave the food.

Answer 4

Scientists say we often get cravings for things our body is lacking.Like if you crave ice cream,you probably aren't consuming enough calcium in you diet.