Do you need more iron?
Have you ever heard of pagophagia? Pagophagia is compulsive ice chewing. Interestingly this condition can be related to iron deficiency. Chewing ice can cool the inflammation in the mouth that low levels of iron my cause. It can also help people with iron deficiency feel more alert and awake.
Remember this in the future if you see yourself or a friend craving ice more than usual. The craving may signal more than just wanting to cool off. Pagophagia can be a symptom of other issues as well and should be brought to the attention of your doctor.