Kit KittlestadJul 23, 2025 5 min read

Celiac Disease Symptoms in Adults and Kids

If meals leave you bloated, tired, or foggy, it might be celiac disease. Learn the symptoms, causes, and gluten-free tips to reclaim your health. │Adobe Stock

If you often feel bloated, foggy, or exhausted after a meal, it might not be in your head. Celiac disease is an autoimmune disorder that affects about 2 million Americans, and even more live undiagnosed. 

While it’s often thought of as a digestive condition, celiac disease symptoms can be surprisingly wide-ranging, from stomach cramps and skin rashes to infertility and mood swings.

Understanding what causes celiac disease (and learning how to manage it) is the first step to feeling better and protecting your long-term health.

Celiac Disease Symptoms and Warning Signs

There’s no one-size-fits-all symptom list for celiac disease. Some people experience intense digestive issues after eating gluten, while others barely notice a stomach ache. The most common gluten intolerance signs include:

  • Bloating

  • Gas

  • Abdominal Pain

  • Chronic Diarrhea

  • Constipation

After a meal, these digestive issues are often the first red flag. 

But, gluten can cause trouble far beyond the gut. People with celiac might also struggle with: 

  • Fatigue

  • Brain Fog

  • Headaches

  • Joint Pain

  • Skin Rashes

  • Tingling In the Hands and Feet 

For some, infertility or missed periods can also be part of the picture. And children with undiagnosed celiac may experience growth delays or irritability.

Because this autoimmune disease related to gluten affects nutrient absorption, untreated celiac can lead to:

  • Anemia

  • Osteoporosis

  • Other Long-Term Health Issues

In more serious cases, it may even raise the risk of other autoimmune conditions or certain cancers.

That’s why it’s so important to recognize these symptoms early on, even if they don’t seem connected at first glance.

What Causes Celiac Disease?

Celiac disease is triggered by gluten, a protein found in barley, rye, and wheat. When someone with celiac ingests gluten, their immune system goes on high alert, taking aim at the lining of the small intestine. Over time, this damages the tiny finger-like structures, called villi, that help absorb nutrients.

But, gluten alone isn’t the full story. Genetics also play a major role. Most people diagnosed with celiac have a gene variant known as HLA-DQ2 or HLA-DQ8. If a close relative has celiac, your risk increases significantly.

Other environmental factors may also be involved. The following can act as triggers in people who are genetically predisposed: 

  • Infections

  • Gut Bacteria Imbalances

  • Surgery

  • Major Stress

So, while eating a sandwich might not seem like a big deal, for someone with this condition, it can set off a chain reaction that the immune system takes very seriously.

Gluten and genetics team up to cause celiac disease—understanding the triggers helps in managing symptoms. │Adobe Stock

Gluten Intolerance vs. Celiac Disease

Not everyone who feels lousy after eating gluten has celiac disease. Some people may have non-celiac gluten sensitivity, which causes similar symptoms without the same autoimmune damage.

The only way to confirm a diagnosis is through proper testing, usually involving a blood test and possibly an intestinal biopsy. If you suspect a problem, it’s important to get tested before starting a gluten-free diet for celiacs, since removing gluten can interfere with accurate results.

How to Treat Celiac Disease

Right now, there’s no pill or cure for celiac disease. The only effective treatment is a diet completely devoid of gluten. Even tiny amounts of it, like crumbs from a shared toaster, can trigger symptoms and cause intestinal damage.

Many people with celiac start to feel better within a few weeks of removing gluten from their diet. But, healing the small intestine takes time, and symptoms don’t disappear overnight. That’s why working with a doctor or dietitian is important when managing the condition and filling in any nutritional gaps.

Watch Out for Hidden Sources of Gluten

Avoiding gluten isn’t as simple as skipping bread and pasta. Gluten is often hiding in:

  • Processed Foods Like Sauces

  • Salad Dressings

  • Canned Soups

  • Deli Meats

  • Candies

  • Supplements

  • Cosmetics

Cross-contamination is also a big concern. Foods cooked in the same fryer as breaded items or meals prepared in shared kitchens can cause reactions. Learning to read labels carefully and ask questions at restaurants becomes second nature for people managing celiac.

When a Gluten-Free Diet Isn’t Enough

Most people with celiac improve once they eliminate gluten. But, in rare cases, symptoms persist even after months on a strict gluten-free diet. This could be a sign of refractory celiac disease, which requires more advanced medical treatment.

The good news is that research is underway to develop medications that could help prevent the immune system from overreacting to gluten. Until then, diet remains the best defense.

Listening to Your Body

Celiac disease symptoms aren’t always dramatic. Sometimes they show up subtly, through fatigue, poor focus, or skin irritation. But, once you learn to recognize the signs and understand how to treat celiac disease, you can take control of your health.

If you’re noticing ongoing digestive problems, unexplained fatigue, or other strange symptoms after eating, it’s worth exploring whether gluten could be the culprit. With the right diagnosis from your doctor and a little dietary detective work, life can feel a whole lot better.

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