Some people feel that food sticks in their throat or chest. Others experience pain when swallowing, frequent choking, unexplained coughing during meals, or the sensation that food takes longer than usual to pass.
Difficulty swallowing is known medically as dysphagia. It can result from many conditions, including acid reflux, inflammation, neurological disorders, and narrowing of the esophagus.
However, persistent or progressive dysphagia can sometimes be associated with cancers of the esophagus, throat, or nearby structures.
In some cases, a person initially has trouble swallowing solid foods but later develops difficulty with softer foods or liquids. This progression does not prove cancer, but it is an important symptom that requires assessment.
Other possible warning signs include unexplained weight loss, persistent hoarseness, pain behind the breastbone, regurgitation, or a feeling of pressure in the throat.
People may adapt their eating habits without realizing how much their symptoms have changed. They might begin avoiding meat or bread, cutting food into very small pieces, drinking water after every bite, or eating much more slowly.
These adjustments can temporarily make meals easier, but they should not replace an evaluation when swallowing difficulties persist.
When should you seek medical care?
Arrange prompt medical assessment for ongoing or worsening swallowing problems. If food becomes completely stuck and you cannot swallow saliva, or if swallowing difficulty causes severe breathing problems, seek emergency care.
Early evaluation can help identify the cause and prevent complications such as dehydration, malnutrition, or aspiration.
Although cancer is one possible explanation, many cases of dysphagia are caused by treatable noncancerous conditions. The goal of an examination is to determine what is actually happening rather than assume the worst.
7. Changes in Bowel Habits That Persist
Digestive patterns can change for many reasons. Diet, dehydration, stress, medications, infections, and conditions such as irritable bowel syndrome can all affect bowel movements.
A temporary episode of constipation or diarrhea is usually not a sign of cancer.
However, a persistent change in bowel habits may deserve further investigation, particularly if it represents a clear departure from a person's normal pattern.
Possible warning signs include diarrhea or constipation that does not resolve, a noticeable change in stool consistency, a feeling that the bowel has not emptied completely, or abdominal discomfort that keeps returning.
Colorectal cancer can sometimes cause changes in bowel habits when a tumor affects the passage of stool through the colon or rectum. Some tumors also bleed slowly, leading to iron-deficiency anemia before the person notices visible blood.
Blood in the stool may appear bright red, dark red, or make stools look black and tarry. The appearance can vary depending on the source of bleeding.
However, blood in the stool does not automatically mean colorectal cancer. Hemorrhoids, anal fissures, inflammatory bowel disease, and other conditions can also cause bleeding.
The problem is that people sometimes assume bleeding is caused by hemorrhoids without having it checked, particularly when the bleeding is painless.
Persistent abdominal bloating or discomfort can also warrant assessment, especially when accompanied by weight loss, reduced appetite, anemia, or changes in bowel habits.
What should you do?
Seek medical advice if a bowel change persists for several weeks, if you notice blood in your stool, or if you develop unexplained anemia or weight loss. A doctor may recommend blood tests, stool testing, colonoscopy, or other investigations based on your age, symptoms, medical history, and risk factors.
Do not wait for severe pain. Colorectal cancer can sometimes cause relatively subtle symptoms, and early evaluation is more useful than waiting for symptoms to become dramatic.
Routine colorectal cancer screening is also important because some precancerous growths can be found and removed before they develop into cancer. Screening recommendations vary by country and individual risk.
8. Persistent Abdominal Bloating or Feeling Full Quickly
Bloating is extremely common. It can follow a large meal, occur around menstruation, or be associated with constipation, food intolerances, and digestive conditions.
Most episodes are temporary.
However, persistent or frequent abdominal bloating that represents a clear change from normal deserves attention, particularly when it occurs alongside other unexplained symptoms.
Some people describe a swollen abdomen, a feeling of pressure, or discomfort that makes their clothes feel tighter. Others find that they become full after eating only a small amount of food.
Persistent bloating and early satiety can occasionally be associated with ovarian cancer. Other possible symptoms include pelvic or abdominal pain, urinary urgency or frequency, and changes in appetite.
These symptoms are often caused by noncancerous conditions, and ovarian cancer is not the most likely explanation for most people experiencing bloating. Nevertheless, persistent symptoms should not be dismissed solely because they seem ordinary.
Cancers involving the stomach, pancreas, liver, or other abdominal organs can also cause abdominal swelling, appetite changes, or discomfort. The exact symptoms depend on the organ involved and the stage of disease.
It is useful to notice the pattern.
Does the bloating happen occasionally after particular foods, or is it present most days? Is it becoming more frequent? Does it occur with pelvic pain, unexplained weight loss, or a noticeable reduction in appetite?
These details can help a clinician determine whether further evaluation is needed.
When should you seek medical advice?
Arrange an appointment if bloating is persistent, frequent, new for you, or accompanied by early satiety, abdominal pain, urinary changes, or unexplained weight loss.