1. Ice
Some people really love chewing ice, it’s true. But if you find yourself craving the cold stuff it might be a sign of anemia, according to a 2014 study. Ice cravings are a form of pica—a desire to eat non-food items like dirt and laundry soap—and are linked to low iron levels.
The researchers hypothesized it might be because chewing the ice might temporarily increase blood flow to the brain, counteracting the slowdown caused by iron deficiency.