Stomach cancer, also called gastric cancer, is a serious disease that starts in the stomach. It can develop slowly and may not show any symptoms at first until the cancer is more advanced. Finding stomach cancer early makes treatment easier. Although these signs can also occur with other problems, you should see a doctor if you notice them.

1. Long-Lasting Abdominal Pain or Discomfort

Pain in your belly that does not go away can signal stomach cancer. The pain may be mild at first but then become worse. It can be a dull pain or a sharp one. If you have belly pain for many days, it is important to have it checked by a doctor.

2. Feeling Full Very Quickly

Feeling full after eating only a small amount of food is known as early satiety. This can happen when a tumor slows down the stomach’s work. When you feel full too soon, you may eat less, which can lead to weight loss. Tell your doctor if you notice this change in your eating habits.

3. Nausea and Vomiting

Feeling sick to your stomach or vomiting can be a sign of stomach cancer. Sometimes, the vomit may have traces of blood. This happens when a tumor blocks the normal flow of food or irritates the stomach lining. If you feel sick often or vomit repeatedly, you should see a doctor.

4. Indigestion or Heartburn That Lasts

Many people have occasional indigestion or heartburn. However, if these feelings continue for a long time, they may be an indication of stomach cancer. A tumor in the stomach can cause constant irritation. If you have heartburn or indigestion that does not go away, a doctor can help find the cause.

5. Trouble Swallowing

Having difficulty swallowing food or drinks is a warning sign. This problem, called dysphagia, can happen when a tumor makes it hard for food to move from the mouth to the stomach. The trouble with swallowing may start small and get worse over time. It is important to tell your doctor if you have this problem.

6. Blood in the Stool or Black Stools

Blood in your stool may show that there is bleeding inside your stomach. The stool may look black or tarry because the blood has been mixed with food. This sign can be hard to notice at first. If you see blood or a change in the color of your stool, you should get it checked by a doctor.

7. Fatigue and Weakness

Feeling very tired and weak for a long time is another sign to watch for. This tiredness can happen because the body uses extra energy to fight cancer. It can also be a sign of anemia if there is bleeding inside the stomach. When fatigue interferes with your daily activities, it is time to talk with your doctor.

8. Vomiting Blood

Vomiting blood is a very serious warning sign. The blood can appear bright red or dark, similar to coffee grounds. This means there is active bleeding in your stomach. If you vomit blood, seek medical help right away.

9. Unexplained Weight Loss

Losing weight without trying is the most common sign of stomach cancer. If you lose weight quickly without changing your diet or exercise habits, something may be wrong. The body uses extra energy when cancer is present. This weight loss is not normal and should be checked by a doctor.

When to See a Doctor

You should see a doctor if you notice one or more of these warning signs. Many of these symptoms can be caused by conditions other than stomach cancer. However, only a doctor can tell you the true cause. Tests such as blood work, imaging scans, or an endoscopy may be needed. An endoscopy uses a small camera to look inside your stomach. Early tests can help find the problem and begin treatment sooner.

What to Expect from Your Visit

During your visit, the doctor will ask about your symptoms and your health history. They may ask questions about your diet and daily routines to better understand your situation. If needed, the doctor might order tests to check for stomach cancer. In addition to these tests, your doctor may recommend a biopsy. A biopsy takes a small sample of stomach tissue to check for cancer cells. This step is important because it confirms the diagnosis and helps choose the best treatment plan.