If you naturally associate stomach cancer with brutally painful stomachaches, you’re not the only one. And yet, stomachaches are not typically a sign of this rare form of cancer at any point in its progression. Instead, the most common feature of the early stages of stomach cancer is that there are no symptoms at all, said Umut Sarpel, M.D., the chief of the division of surgical oncology at Beth Israel Deaconess Medical Center in Boston.
“We all get stomachaches from time to time, and that can make people worry about stomach cancer,” Dr. Sarpel said. “But it’s not one of the most common cancers, and in most cases, stomachaches or pain are not going to be the result of cancer.”
Meet the expert: Umut Sarpel, M.D., the chief of the division of surgical oncology at Beth Israel Deaconess Medical Center in Boston.
So what are the signs of stomach cancer? When it causes any, they are typically one of these six digestive problems.
There is blood in your vomit or stool.
While both colitis and Crohn’s disease can cause bloody stool, it can also be a sign of cancer. Regardless, blood in either your poop or your vomit demands a visit to a GI doctor, Dr. Sarpel said. If the bleeding is related to cancer, the blood in your stool is likely to look maroon or tarry black. “It looks that way because it’s been acted on by your digestive enzymes,” she explained. If the blood is in your vomit, it’s more likely to look bright red, and it may have a coarse “coffee grounds” texture because it has been partially digested, Dr. Sarpel added.
You feel full after just a few bites.
You were definitely hungry when you sat down to eat. But after a few bites, your appetite vanishes and the food isn’t appealing. Dr. Sarpel called this “early satiety,” and says it’s another symptom that could—emphasis on could—indicate stomach cancer. “Especially if feeling full really quickly is different than what you’re used to, that’s something you shouldn’t ignore,” she said.
You have constant, gnawing stomach pain.
Yes, in some cases stomach pain is a sign of stomach cancer. But in most cases, your run-of-the-mill pain or stomach cramps are going to be the result of some other gut or abdominal ailment, not cancer, Dr. Sarpel said. If it is a result of cancer, the pain will be a consistent gnawing in the middle of your stomach, she added. “It’s not something you feel for one day, and then it goes away for two weeks and comes back again.”
You lost weight without trying.
Many health conditions—including type 1 diabetes, Addison’s disease, and Crohn’s disease—can lead to unexplained weight loss. Add stomach cancer to that list, Dr. Sarpel said. “If you’re losing weight and not dieting, that’s something to pay attention to,” she explained. Be aware that the weight loss may be gradual. While you may not notice a sudden drop, you might step on a scale and find you’ve lost 10 pounds during the last 6 months. It is totally natural for your weight to fluctuate, but if the weight loss is noticeable and you haven’t been doing anything that accounts for it, talk with your doctor.
You have frequent, unexplained heartburn.
Heartburn, indigestion, and other common symptoms of an unhappy gut can also be early warning signs of stomach cancer, according to the MD Anderson Cancer Center at the University of Texas. Again, Dr. Sarpel said these sorts of symptoms are much more likely to be something other than cancer. But it’s still a good idea to let your doctor know what’s going on, especially if they are constant and don’t seem to be caused by consumption of specific foods and drinks.
You experience regular bloating, diarrhea, and constipation.
It makes sense that a cancer growing in your stomach could make you feel bloated, or mess with your bowel movements. While each of these symptoms is never going to scream “stomach cancer!” to a doctor, experiencing them with some of the other issues on this list—especially if you have other stomach cancer risk factors, like being over 60, being overweight or obese, having a history of smoking, or having had stomach surgery in the past—could lead to cancer-related follow-up testing if your doctor can’t pinpoint another explanation.
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