Cancer often develops silently, with its earliest symptoms resembling common health problems such as fatigue, minor infections or digestive issues. Because these warning signs can appear harmless, many people dismiss them as the effects of stress, ageing or lifestyle changes, potentially delaying diagnosis and treatment. Health experts advise paying attention to persistent or unexplained symptoms, particularly when they do not improve over time or recur frequently.

In an interview with HT Lifestyle, Dr Sameer Khatri, Principal Director of Medical Oncology at Max Super Speciality Hospital, Patparganj, said many early signs of cancer are commonly mistaken for routine illnesses. While experiencing one of these symptoms does not necessarily indicate cancer, he stressed that persistent changes in the body should not be ignored and should be evaluated by a healthcare professional. Early detection remains one of the most effective ways to improve treatment outcomes across many types of cancer.

Among the symptoms that warrant attention is persistent fatigue that does not improve despite adequate rest. Unlike ordinary tiredness, cancer-related fatigue can be severe, prolonged and interfere with daily activities. Unexplained weight loss without changes in diet or physical activity is another important warning sign. Similarly, recurring fever, frequent infections or excessive night sweats may sometimes indicate an underlying health condition that requires medical investigation, including certain blood cancers.

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Changes in bowel or bladder habits, persistent indigestion, difficulty swallowing or a cough that lasts for several weeks should also be assessed if they do not resolve. Dr Khatri noted that abnormal or unexplained bleeding, such as blood in the stool or urine, unusual vaginal bleeding, or coughing up blood, should never be ignored. Likewise, a lump, swelling or thickening in any part of the body, particularly if it grows or persists, should be examined by a doctor even if it is not painful.

The oncologist also highlighted that long-lasting hoarseness, persistent mouth ulcers, changes in moles or skin lesions, and wounds that fail to heal can sometimes signal underlying cancers. While these symptoms are often linked to less serious conditions, their persistence or progression should prompt medical evaluation. Individuals with a family history of cancer or other risk factors should be especially vigilant about routine screenings and regular health check-ups.

Doctors emphasise that most of these symptoms are far more likely to be caused by non-cancerous conditions. However, the key is not to ignore persistent or unexplained changes in the body. Seeking timely medical advice can help identify the underlying cause, whether it is cancer or another condition, and ensure appropriate treatment. Awareness of early warning signs, combined with recommended screenings and healthy lifestyle practices, plays a crucial role in improving the chances of early diagnosis and successful treatment.

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