Unexplained itching? Harvard-trained gut doctor shares 7 silent signs of pancreatic cancer that you should never ignore

Some health changes can seem too ordinary to warrant attention, especially when they appear without pain or any obvious explanation. But persistent changes in digestion, appetite, weight, blood sugar or even the skin can sometimes signal that something deeper needs checking. Pancreatic cancer is particularly difficult to detect early because it may cause few noticeable symptoms at first. Harvard-trained gut doctor Dr Saurabh Sethi has shared 7 warning signs linked to pancreatic cancer on Instagram, highlighting symptoms that should not simply be brushed aside. While these signs can have several other causes, persistent or unexplained changes deserve medical evaluation.

New-onset diabetes after 50

A new diabetes diagnosis later in life, particularly without an obvious explanation, can sometimes be associated with changes in the pancreas. Pancreatic cancer can affect insulin-producing cells and alter blood-sugar regulation. However, this link is uncommon: the NCI notes that fewer than 1% of new diabetes cases are caused by pancreatic cancer.

Unexplained weight loss

Losing weight without deliberately changing diet or exercise habits can be a warning sign that warrants investigation. Pancreatic cancer may cause poor appetite and interfere with digestion, contributing to unintended weight loss and nutritional problems.

Pale, oily or floating stools

Changes in stool can offer clues about digestion. A blocked bile duct or reduced delivery of pancreatic digestive juices can prevent fats from being properly broken down, resulting in pale, bulky, greasy or floating stools. Such changes can also occur with other digestive or biliary conditions.

Persistent mid-back pain

Unexplained pain in the upper or middle abdomen that radiates towards the back can occur with pancreatic cancer. Because the pancreas lies deep inside the abdomen, pain may sometimes be felt in the back rather than directly over the organ. Still, back pain has many more common causes.

Yellow skin or eyes

Jaundice, marked by yellowing of the skin or whites of the eyes, can develop when a pancreatic tumour blocks the common bile duct. Tumours in the head of the pancreas are particularly likely to cause this because of their proximity to the duct. Dark urine and pale stools may accompany jaundice.

Sudden food intolerance

A new loss of appetite, nausea or unexplained aversion to foods that were previously tolerated should not automatically be dismissed. Pancreatic cancer can cause nausea, vomiting and appetite loss, while digestive disruption may make eating uncomfortable. These symptoms are nonspecific and can result from numerous other conditions.

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A post shared by Saurabh Sethi MD MPH | Gastroenterologist (@doctor.sethi)

Unexplained itching

Persistent itching without an obvious skin condition can sometimes be connected to bile-flow problems. When a pancreatic tumour blocks the bile duct, bilirubin can build up in the bloodstream and skin, causing jaundice-associated itching. Itching alone does not indicate pancreatic cancer, but unexplained itching accompanied by yellowing or other symptoms should be medically assessed.