If you need coffee as a morning pick-me-up, you're not alone. If you need to chomp through a cup of ice, you're also not alone—but there are fewer people like you. Such ice-eaters may suffer from pagophagia (a compulsive craving for ice) that could be caused by an iron deficiency, the Washington Post reports. In a study published in Medical Hypotheses, researchers asked both healthy and anemic participants to consume either a glass of lukewarm water or a cup of ice before taking a 22-minute test designed to help diagnose ADHD. They found that iron-deficient subjects who drank the water performed "far more sluggishly" than healthy subjects, but those who crunched on ice did as well as the controls....

Source: http://www..com.ng/index.php/more-news/odd-news-reports/item/1233-chewing-on-ice-better-than-sex-for-some