A Gastroenterologist Says This Common Post-Meal Symptom May Signal Early Pancreatic Cancer

When cancer is caught early, treatment can make a major difference, and that is especially true for pancreatic cancer. Because the pancreas sits deep in the abdomen behind the stomach, a tumor can grow for some time before it causes clear symptoms or appears during a routine exam. As a result, many cases are not found until the disease has already spread.

Pancreatic cancer is relatively uncommon, making up about 3% of cancers in the U.S., according to the American Cancer Society. Even so, it causes about 8% of cancer deaths and is now the third leading cause of cancer-related death in the country, after lung and colorectal cancers. The ACS estimates that about 67,530 Americans will be diagnosed with the disease in 2026, and the five-year survival rate remains 13%.

One reason this cancer is so difficult to detect is that its early signs are often mild and easy to confuse with everyday health issues. People may dismiss them as stress, a hectic schedule or normal aging, which means the warning signs can be overlooked until more symptoms appear.

That is why it helps to know which subtle changes deserve medical attention. One gastroenterologist highlighted a symptom that can be especially easy to miss.

The Post-Meal Symptom That May Be an Early Sign of Pancreatic Cancer

Indigestion, or a noticeable change in how your body digests food, can be an early sign of pancreatic cancer. Gastroenterologist and gastrointestinal surgeon Dr. Samrat V. Jankar, MBBS, FMAS, DNB, previously told Parade that this issue can occur along with other less obvious warning signs. “In addition to these symptoms, some people may also experience indigestion after meals or changes in their ability to digest foods,” he said.

The pancreas makes enzymes that help break down food, so a tumor can interfere with digestion. The challenge is that many people experience stomach upset after a heavy or rich meal from time to time, which makes the symptom easy to ignore. Dr. Jankar said one reason pancreatic cancer is often diagnosed late is that early signs are frequently missed, dismissed or mistaken for other conditions.

Other early symptoms he said to watch for include changes in bowel habits, such as new constipation or diarrhea that happens often, pain in the upper abdomen or back, unexplained weight loss, fatigue and jaundice, which causes yellowing of the skin. Less common symptoms can include blood clots, depression and swelling of the face and body.

When to Seek Medical Advice About Possible Pancreatic Cancer Symptoms

If you notice any of these symptoms, Dr. Jankar said to see a doctor as soon as possible. A doctor will likely recommend a CT scan. “They may also take blood samples to look for elevated levels of certain enzymes, which could indicate pancreatic cancer. If these tests are inconclusive, a biopsy may be necessary to make a definitive diagnosis,” he said.

It is also important to understand your risk factors. Dr. Jankar noted that smoking and regularly eating red and processed meats can raise the risk, along with family history. “Those with close relatives—parents or siblings—who have had pancreatic cancer are two to three times more likely to develop the condition than those without such a family history,” he said.

Occasional indigestion is very common and usually harmless. But if it is new, persistent or paired with other symptoms on this list, it is worth talking to your doctor.