Although living standards have greatly improved, our bodies seem to be getting weaker, and cancer rates are on the rise. To protect your health, paying attention to early warning signs before cancer develops is extremely important.
If certain symptoms appear, even though they may not be exclusive to cancer, you should take them seriously. Early check-ups can help doctors rule out cancer risks or provide timely diagnosis and treatment. Just like with any disease, the earlier cancer is detected, the better the treatment outcomes.

Here are 6 warning signs before cancer strikes that most people ignore:
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Unexplained, Continuous Weight Loss
Sudden weight loss may seem like good news, but it can actually indicate declining health, including cancer risk. Often accompanied by fatigue and low blood sugar, this is a red flag that a tumor may be growing.
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Changes in Fingernails
Be cautious of lung, liver, or skin cancer. Tiny spots, cracks, or dark streaks on nails could indicate underlying problems. Clubbing (downward bending) of nails can signal lung cancer, while pale or punctured nails may be linked to liver cancer.
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Persistent Fever
While fever is often caused by infections, unexplained, long-lasting fevers may point to cancers like lymphoma or leukemia. In early to mid-stages, persistent low-grade fevers (~38°C) are common, and in severe cases, high fevers can occur. Tests such as X-rays, CT scans, or MRIs may be required.

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Recurring Mouth Ulcers
Sores that don’t heal within 3–4 weeks, especially on the lips, tongue, or gums, could indicate precancerous lesions or oral cancer. Smokers should watch out for persistent white patches in the mouth or on the tongue.
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Swollen Calves
This may signal dangerous blood clots, especially after prolonged sitting or bed rest. If swelling, pain, and redness occur—and are followed by sudden chest pain or difficulty breathing—it may mean the clot has traveled to the lungs, which is life-threatening.
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Chronic Cough
Coughs that last longer than 2–3 weeks, especially with blood-streaked phlegm, may signal lung cancer. Typical symptoms include persistent cough, chest pain, wheezing, and shortness of breath.
Bottom line: Don’t ignore these signals. They could mean cancer is quietly approaching. Maintain a balanced diet, stay active, and get regular check-ups to keep cancer at bay.