Health News of 2026-10-16
15 cancer warning signs you should never ignore
Cancer can develop without obvious symptoms in its early stages, making it important to pay attention to unusual changes in the body.
Persistent pain, unexplained bleeding, changes in bowel habits and unusual lumps are among the symptoms that may require medical attention.
Although these symptoms do not necessarily mean a person has cancer, recognising them early and seeking medical evaluation can help identify potential health problems before they progress.
According to a recent publication by msn.com, several changes in the body could be early warning signs of different types of cancer and should not be ignored.
1. Unusual menstrual changes and lower abdominal pain
Occasional menstrual cramps and minor changes in the menstrual cycle are common among women.
However, persistent lower abdominal pain or unusual bleeding could indicate an underlying health problem.
In some cases, these symptoms may be associated with ovarian, cervical or endometrial cancer. Women experiencing persistent or unusual changes should consult a healthcare professional for evaluation.
2. Blood in stool and changes in urination
Dark or bloody stool and a sudden increase in the frequency of urination may indicate problems affecting the digestive or urinary systems.
Although these symptoms can have several causes, blood in stool may be associated with colorectal cancer, while changes in urination can sometimes occur with bladder cancer.
Abnormal uterine bleeding may also be a symptom of endometrial cancer.
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Persistent diarrhoea, constipation or other significant changes in bowel habits should be assessed by a medical professional.
3. A persistent cough
A cough caused by a common cold usually improves within a few days or weeks.
However, a cough that persists, worsens or occurs alongside other symptoms may require further investigation.
A persistent cough can sometimes be associated with lung cancer, particularly when accompanied by chest pain, shortness of breath or coughing up blood.
4. Persistent headaches
Headaches are common and can result from dehydration, stress, lack of sleep and other conditions.
However, a new or persistent headache, especially one that worsens or does not respond to usual treatment, should be evaluated.
In some cases, headaches may be associated with a brain tumour. Other concerning symptoms include changes in vision, unexplained nausea, seizures or weakness.
5. Difficulty swallowing
Difficulty swallowing, medically known as dysphagia, can create the sensation that food is stuck in the throat or chest.
Occasional swallowing difficulties may not be serious, but persistent problems can be associated with conditions affecting the oesophagus, throat or other parts of the digestive system. Some cancers can cause these symptoms.
People who increasingly rely on softer foods or smaller bites because swallowing has become uncomfortable should seek medical advice.
6. Unexplained bruising
Bruises commonly develop after an injury and usually fade as the body heals.
However, frequent bruising without an obvious cause or bruises that appear alongside unusual bleeding may require investigation.
In some cases, unexplained bruising can be associated with blood disorders, including leukaemia, a cancer that affects blood-forming tissues.
Anyone experiencing persistent unexplained bruising, particularly alongside fatigue, pale skin or frequent infections, should consult a healthcare professional.
7. Recurrent fevers and infections
Occasional infections and fevers are common. However, repeated infections, persistent fever or symptoms that do not have an obvious explanation may indicate an underlying health problem.
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Certain blood cancers, including leukaemia and lymphoma, can affect the body's ability to fight infections.
Medical evaluation may help establish whether recurring infections are caused by an ordinary illness, an immune system problem or another condition.
8. Mouth sores or patches that do not heal
Minor mouth sores caused by accidental bites or hot food generally heal within a short period.
However, a sore that does not heal after two weeks, persistent red or white patches, or an unusual growth inside the mouth should be examined.
These changes can sometimes be associated with oral cancer, which may affect the lips, tongue, gums and lining of the mouth.
Smoking and heavy alcohol consumption are among the factors that increase the risk.
9. Changes in moles or skin spots
Most moles and birthmarks are harmless, but changes in their appearance should not be overlooked.
A mole or spot that grows, changes colour or shape, begins itching or bleeds may require examination for skin cancer, including melanoma.
Early medical assessment can help determine whether the change is harmless or requires further investigation.
10. Persistent pain without an obvious cause
Muscle soreness after exercise or a minor injury generally improves with time. Pain that persists without a clear explanation, however, deserves medical attention.
Depending on its location and cause, persistent pain in the bones, abdomen, joints or other parts of the body may sometimes be associated with cancer.
Pain alone does not establish a cancer diagnosis, but unexplained or worsening discomfort should be investigated.
11. Extreme fatigue
Feeling tired after a demanding day is normal, and adequate rest usually helps restore energy.
Cancer-related fatigue can be more severe and persistent, leaving a person exhausted even after sleeping or resting.
Unexplained fatigue may occur in people with leukaemia, lymphoma and other cancers.
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However, anaemia, infections, sleep disorders and several other conditions can also cause persistent exhaustion.
People whose fatigue interferes with everyday activities should seek medical evaluation.
12. Bleeding after menopause
Bleeding after menopause is not considered a normal menstrual change and should always be assessed by a healthcare professional.
Although hormonal changes, medications and other conditions may explain the bleeding, it can sometimes be a warning sign of endometrial or cervical cancer.
Even a single episode of postmenopausal bleeding warrants medical attention, particularly because some causes can be treated more effectively when identified early.
13. Persistent stomach pain or nausea
Occasional stomach discomfort may result from indigestion, food-related problems or a minor infection.
However, persistent abdominal pain, nausea, unexplained loss of appetite or ongoing bloating may require further investigation.
Depending on the other symptoms and medical findings, these problems can sometimes be associated with cancers affecting the stomach, liver, pancreas or other parts of the digestive system.
14. New or persistent lumps
Lumps can develop for several reasons, including cysts, infections and benign growths such as lipomas.
However, a new lump that persists, grows or changes should be examined by a healthcare professional.
Swollen lymph nodes in the neck, armpits or groin commonly occur during infections and often return to normal afterwards.
If swelling persists without an obvious explanation, particularly alongside unexplained weight loss, fever or night sweats, medical assessment is advisable.
15. Persistent abdominal swelling or bloating
Bloating is common, especially after eating large meals, and often resolves within a short time.
However, abdominal swelling or bloating that persists or repeatedly occurs alongside pelvic pain, feeling full quickly or changes in appetite should not be ignored.
Persistent bloating can have several causes, but it may sometimes be associated with ovarian or gastrointestinal cancers.
Because bloating is common and often attributed to diet, persistent or unusual changes may go uninvestigated for too long.
When should you see a doctor?
Having one or more of these symptoms does not automatically mean a person has cancer.
Many can be caused by non-cancerous conditions, and the significance of each symptom depends on its duration, severity and accompanying signs.
However, unexplained symptoms that persist, worsen or recur should be assessed by a healthcare professional.
Some symptoms, including blood in the stool, bleeding after menopause, coughing up blood or new neurological problems, may require prompt medical attention.
Early evaluation can help identify the cause and determine whether further tests are necessary.
Rather than attempting to diagnose cancer based on symptoms alone, people should seek professional advice when they notice unusual or lasting changes in their bodies.
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