Chewing Ice: A Strange Habit That May Be a Health Warning

By Keziah Nyarkowaa Oppong-Duah

Have you ever seen someone constantly chewing ice and wondered why they enjoy it? Although it may look like a harmless habit, regularly craving and chewing ice can sometimes be linked to an underlying health problem.

The strong urge to chew ice is known as pagophagia, a form of pica in which a person craves and eats non-food substances. Pica can involve cravings for substances such as clay, soil or starch, while pagophagia specifically refers to craving and chewing ice.

One of the conditions most commonly associated with pagophagia is iron-deficiency anaemia. Iron is an important mineral needed to produce haemoglobin, the protein in red blood cells responsible for carrying oxygen throughout the body.

When the body does not have enough iron, it may not produce enough healthy haemoglobin. This can reduce the amount of oxygen delivered to tissues and may result in symptoms such as tiredness, weakness, dizziness, headaches and shortness of breath.

Interestingly, some people with iron deficiency may develop an unusual craving for ice even before they notice other symptoms. Researchers have suggested that chewing ice might temporarily improve alertness or concentration in people with iron deficiency, although the exact reason for the connection is still not fully understood.

Iron deficiency can occur for several reasons. Blood loss, inadequate iron intake, increased nutritional requirements and problems absorbing iron can all contribute. People who experience heavy menstrual bleeding and pregnant women may be particularly vulnerable because their bodies may require more iron.

However, chewing ice does not automatically mean that someone has iron deficiency. Some people simply enjoy the cold sensation or crunchy texture of ice. Therefore, ice chewing should not be used by itself to diagnose anaemia.

There is also another reason to avoid making a habit of chewing hard ice: it can damage the teeth. Repeated chewing may contribute to chipped or cracked teeth, increased sensitivity and damage to dental fillings.

Anyone who develops a persistent and unusual craving for ice, especially when accompanied by tiredness, weakness or dizziness, should consider speaking with a healthcare professional. A blood test can help determine whether iron deficiency or anaemia is present.

If iron deficiency is confirmed, treatment depends on its cause and severity. A healthcare professional may recommend dietary changes or iron supplements. Iron-rich foods include meat, beans, lentils, fortified cereals and dark green leafy vegetables.

It is important not to take large amounts of iron supplements without medical advice because excessive iron can also be harmful. Identifying and treating the underlying cause of iron deficiency is more useful than simply trying to stop the ice craving.

A habit that appears harmless may sometimes be the body’s unusual way of signalling that something needs attention. Recognising persistent ice cravings and seeking appropriate medical advice can help people identify possible health problems early.