Signs You Should See a Gastroenterologist

Many people live with digestive symptoms for months or years before seeing a specialist — often because they assume their symptoms are normal, or they're not sure what warrants a GI evaluation. Here's a practical guide to when you should make that call.

You Should See a Gastroenterologist If You Have:

1. Rectal Bleeding

Blood in the stool or on toilet paper should never be ignored. While hemorrhoids are the most common cause, rectal bleeding can also indicate polyps, diverticular disease, inflammatory bowel disease, or colorectal cancer. Any new rectal bleeding warrants evaluation.

2. Persistent Heartburn or Acid Reflux

Heartburn more than twice a week, or heartburn that interrupts your sleep or doesn't respond to over-the-counter medications, may indicate GERD. Untreated GERD can lead to esophageal damage, Barrett's esophagus, and over time, esophageal cancer. A gastroenterologist can evaluate the severity of your reflux and determine whether an upper endoscopy is needed.

3. Unexplained Changes in Bowel Habits

A significant change in the frequency, consistency, or appearance of your stool — especially if it persists for more than a few weeks — should be evaluated. This includes new constipation, diarrhea, or alternating between both.

4. Persistent Abdominal Pain or Bloating

Occasional bloating after a large meal is normal. Bloating that is persistent, severe, or accompanied by pain, nausea, or weight loss is not. A gastroenterologist can evaluate for IBS, celiac disease, SIBO, or other conditions.

5. Difficulty Swallowing

Dysphagia — the sensation of food sticking in the throat or chest — is not normal and should be evaluated promptly. It can indicate esophageal strictures, Barrett's esophagus, eosinophilic esophagitis, or in some cases esophageal cancer.

6. Unexplained Weight Loss

Losing weight without trying is a red flag symptom that warrants thorough GI evaluation. It can be associated with inflammatory bowel disease, celiac disease, or gastrointestinal malignancy.

7. Abnormal Liver Tests or Elevated Liver Enzymes

If your primary care physician has found elevated liver enzymes on routine bloodwork, a gastroenterologist or hepatologist should evaluate you for fatty liver disease, hepatitis, or other liver conditions.

8. You're 45 and Haven't Had a Colonoscopy

This is one of the most important reasons to see a GI doctor. Colorectal cancer is the second leading cause of cancer death in the US — and it is largely preventable with timely screening. The current guideline recommends starting at age 45 for average-risk adults.

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