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.
If you find yourself constantly reaching for chocolate—one of the most popular food cravings—you may be depressed and trying to self-medicate with the sweet stuff, according to a study done by the American Chemical Society. An ounce of dark chocolate boosted the levels of serotonin and dopamine, also known as “feel good chemicals,” in participants’ brains. In addition, chocolate contains magnesium and theobromine, two compounds shown to reduce levels of stress hormones and promote muscle relaxation.