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Why are people eating cornstarch by itself?: A deep dive into the hidden health reasons

4 min read

According to health experts, the compulsive craving and consumption of non-food items like cornstarch is a well-documented symptom of a condition known as pica. This unusual behavior of people eating cornstarch by itself can be linked to underlying nutritional, psychological, or sensory factors.

Quick Summary

The consumption of plain cornstarch is often tied to the eating disorder pica, which is commonly associated with nutritional deficiencies like iron deficiency anemia. Other contributing factors include a craving for the unique sensory texture and, in some cases, psychological needs.

Key Points

  • Pica and Cornstarch: The craving for pure cornstarch (amylophagia) is a form of pica, an eating disorder linked to a desire for non-nutritive substances.

  • Nutrient Deficiencies: The habit is often associated with nutritional deficiencies, most commonly iron-deficiency anemia, and sometimes zinc deficiency.

  • Sensory and Psychological Factors: For some, the fine, powdery texture is a satisfying sensory experience, while others may use the behavior as a coping mechanism for stress or anxiety.

  • Significant Health Risks: Eating large amounts of raw cornstarch can cause digestive problems, dangerously spike blood sugar levels, and lead to weight gain due to empty calories.

  • Seek Medical Evaluation: The safest course of action for anyone with a persistent craving is to consult a healthcare provider to diagnose and treat any underlying medical or psychological issues.

In This Article

What is Amylophagia (Starch Eating)?

Amylophagia, the compulsive eating of starch, is a specific form of pica, an eating disorder characterized by a persistent craving for and consumption of non-nutritive substances. While most people associate pica with eating dirt or clay, raw cornstarch is a common target for those with amylophagia. The behavior is particularly prevalent among women, including those who are pregnant, and children. Although the exact cause is not fully understood, there are several medical and psychological reasons behind it.

The Link Between Nutritional Deficiencies and Cornstarch Cravings

One of the most significant medical explanations for a cornstarch craving is a nutritional deficiency. The body may instinctively seek substances to replenish low levels of certain minerals.

  • Iron Deficiency Anemia: Studies have consistently linked pica to iron deficiency anemia. While eating cornstarch does not provide iron, the craving for its non-food texture often subsides when the iron deficiency is treated with supplements. It is crucial to address the anemia, as the cornstarch itself offers no solution and can exacerbate health problems.
  • Zinc Deficiency: Like iron, a lack of zinc has also been associated with pica. These deficiencies are most common in pregnant individuals and children, who are more susceptible to pica.

The Sensory and Psychological Appeal of Cornstarch

Beyond nutritional needs, the appeal of eating cornstarch can be purely sensory or psychological. The fine, powdery texture that dissolves in the mouth provides a satisfying feeling for some individuals. The phenomenon has even gained traction online, particularly in Autonomous Sensory Meridian Response (ASMR) videos, where creators film themselves eating cornstarch for the relaxing auditory experience. This online exposure normalizes the behavior and can make it more common among niche audiences.

Psychologically, eating cornstarch can serve as a coping mechanism for stress and anxiety. It can be a soothing, repetitive behavior for individuals with certain mental health conditions, including OCD. For some, especially those on restrictive diets, the bland texture can also create a feeling of fullness.

Health Risks of Eating Raw Cornstarch

While a craving for cornstarch may seem harmless, habitual consumption, especially in large quantities, poses several health risks.

  • Digestive Issues: Raw cornstarch is difficult for the body to digest, which can lead to uncomfortable gastrointestinal symptoms like bloating, gas, and constipation. Long-term consumption can lead to more serious intestinal conditions.
  • Blood Sugar Spikes: As a refined carbohydrate, cornstarch has a high glycemic index. Eating large amounts can cause blood sugar levels to spike rapidly, which is particularly dangerous for people with diabetes or insulin resistance.
  • Dental Damage: The gritty, powdery texture can wear down tooth enamel over time, leading to significant dental problems.
  • Empty Calories: Cornstarch is dense in calories but lacks essential nutrients like protein, fiber, vitamins, and minerals. Consuming it regularly can lead to unhealthy weight gain and displace more nutritious foods in the diet.

Comparison of Diets: Balanced vs. Cornstarch-Heavy

Feature Balanced, Nutrient-Dense Diet Cornstarch-Heavy Diet
Nutritional Profile Rich in protein, fiber, vitamins, minerals, and healthy fats. Very low in essential nutrients; primarily refined carbohydrates.
Digestive Health Promotes regular bowel movements and a healthy gut. Can cause bloating, gas, constipation, and long-term intestinal issues.
Blood Sugar Control Stabilizes blood sugar levels due to fiber and protein content. Causes rapid and significant blood sugar spikes due to high glycemic index.
Weight Management Supports healthy weight management by providing satiety. Contributes to unhealthy weight gain due to empty, calorie-dense content.
Underlying Causes Addresses the root cause of nutritional deficiencies. Masks the symptoms, allowing underlying deficiencies to go untreated.

Healthier Alternatives and Treatment Options

For individuals with a cornstarch craving, there are healthier ways to address both the sensory and nutritional aspects of the issue.

  • Address Nutritional Deficiencies: The first step is to consult a healthcare provider for blood tests to check for iron and zinc deficiencies. Treating the underlying deficiency with supplements or dietary changes is often enough to stop the craving.
  • Find Sensory Substitutes: For those who enjoy the texture, alternatives like crushed ice chips, rice cakes, or crunchy vegetables can provide a similar sensory experience without the negative health effects.
  • Seek Psychological Support: If the craving is linked to stress, anxiety, or another mental health condition, behavioral therapy can provide coping strategies and address the root cause.
  • Dietary Adjustments: Incorporate fiber-rich foods like whole grains, beans, and leafy greens to provide satiety and nutrients, which can help eliminate the craving.

Conclusion: Seeking Professional Guidance

While the reasons for a craving for cornstarch can range from psychological stress to a simple sensory preference, the habit is most frequently a symptom of an underlying nutritional or mental health issue. It is not a harmless quirk, and ignoring the behavior can lead to serious health complications, from digestive problems to undiagnosed anemia. For anyone experiencing persistent cravings for cornstarch, seeking professional medical evaluation is the most responsible course of action. This will help address the root cause, whether it's a nutritional deficiency or a psychological factor, and ensure overall well-being. For more information on pica, consider visiting reputable health resources like the Cleveland Clinic.

Frequently Asked Questions

The medical term for craving and eating starch, like cornstarch, is amylophagia. It is considered a specific type of pica, an eating disorder involving non-nutritive substances.

Pica and amylophagia have been strongly linked to iron-deficiency anemia, which is a common and serious health condition. Zinc deficiency is also sometimes associated with these cravings.

Yes, psychological factors can play a role. Some people eat cornstarch for its unique texture, or as a coping mechanism for anxiety and stress. It is also linked to certain mental health conditions like OCD.

Eating raw cornstarch is not recommended. Large amounts are difficult to digest and can lead to bloating, gas, and constipation. Cooked cornstarch, used as a thickening agent, is safe in moderation.

Yes, cornstarch is a highly refined carbohydrate with a high glycemic index. Consuming large amounts can cause a rapid spike in blood sugar, which is a concern for everyone, but especially for individuals with diabetes.

You should consult a doctor or healthcare provider. They can perform blood tests to check for nutritional deficiencies and provide guidance. Treating the underlying cause is the most effective way to stop the craving.

For a similar texture, try healthier options like crushed ice chips or rice cakes. If the craving is due to a nutrient deficiency, focus on a balanced diet rich in iron-rich foods such as lean meats and beans, or take supplements as directed by your doctor.

References

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Medical Disclaimer

This content is for informational purposes only and should not replace professional medical advice.