The desire to eat strange or non-food items that are not nutritive is known as pica. Pica is a disorder characterized by persistent cravings and consumption of substances that lack nutritional value, such as dirt, clay, ice, chalk, paper, or hair. Pica can occur in children, pregnant women, individuals with certain nutritional deficiencies, or those with underlying medical or psychological conditions. The exact cause of pica is not fully understood, but it is often associated with nutrient deficiencies, developmental disorders, or mental health conditions. If you or someone you know is experiencing pica, it is important to seek medical advice for proper evaluation and management.