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Celiac Disease

Celiac disease is an autoimmune disorder where eating gluten triggers an immune response that damages the lining of the small intestine. Over time this can prevent absorption of vital nutrients and cause a range of symptoms from digestive issues to fatigue and anemia.

Digestive System
  • What exactly is celiac disease?
    MedlinePlusJun 2026

    Celiac disease is an autoimmune condition where your immune system attacks the lining of your small intestine whenever you eat gluten, a protein found in wheat, barley, and rye. Over time this damage makes it harder for your body to absorb the nutrients it needs from food.

  • Why does my body react so badly to gluten?
    MedlinePlusJun 2026

    Your immune system treats gluten as a threat and launches an attack on the lining of your small intestine trying to destroy it. This repeated attack damages tiny projections called villi that are responsible for absorbing nutrients, leading to deficiencies over time.

  • Can celiac disease run in families?
    MedlinePlusJun 2026

    Yes, celiac disease runs in families. If a parent or sibling has it, you have about a 1 in 10 chance of having it too. Genetic testing or blood tests can help determine whether close family members should be screened.

  • Could I have had celiac disease for years without knowing it?
    MedlinePlusJun 2026

    Yes, many people live with celiac disease for years or even decades before getting diagnosed. Symptoms can range from obvious digestive problems to subtle ones like fatigue, anemia, or bone loss, which makes the condition easy to miss or confuse with other conditions.

  • Is celiac disease the same as being gluten intolerant?
    MedlinePlusJun 2026

    No, they are different. Celiac disease is a serious autoimmune condition that causes immune damage to the intestine, while gluten intolerance (non-celiac gluten sensitivity) causes symptoms without that same type of damage. Your doctor can use specific tests to tell them apart.