Although pregnancy is often associated with unusual food cravings, other conditions could be the cause of craving certain foods, beverages, or other substances. Craving vinegar or substances that contain large amounts of vinegar such as pickles or ketchup could be a sign of an overgrowth of Candida, a type of microorganism that often causes fungal infections.
Cravings can also be a sign of some type of nutrient deficiency. For example, an urge to chew ice is a symptom of iron deficiency. A craving for burned food could be a sign of carbon deficiency. Blood tests can check for most types of deficiencies.Learn more about Cooking