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Leukemias and lymphomas
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Stomach and colon cancers that cause internal bleeding and anemia
When fatigue is persistent, progressive, and unexplained, it deserves attention.
3. Changes in the Skin
Any noticeable change in the skin should be monitored carefully. Warning signs include:
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Moles that change color, size, or shape, which may indicate melanoma
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Wounds or sores that don’t heal, possibly signaling skin cancer
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Yellowing of the skin or eyes (jaundice), linked to liver or pancreatic cancer
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Dark patches, persistent itching, or unusual discoloration, which can reflect internal cancers
The skin often acts as a visible mirror of what’s happening inside the body.
4. Persistent Pain
Pain that doesn’t go away with rest or common medication should always be investigated.
Certain cancers are known to cause chronic pain, including:
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Bone tumors, which often cause deep, worsening pain
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Ovarian, colorectal, and lung cancers, which may cause abdominal or chest pain
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Brain tumors, often associated with persistent headaches, nausea, or blurred vision
Ongoing pain is not something to “get used to” — it’s a signal worth checking.
5. Unusual Lumps or Swelling
Lumps that grow, harden, become painful, or last longer than two weeks should be examined by a healthcare professional.
This includes lumps in:
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The breasts
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The testicles
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The neck, armpits, or other parts of the body
Early evaluation greatly increases the chances of identifying whether a lump is benign or requires treatment.
Can Cancer Be Prevented?
According to the Instituto Nacional de Câncer (INCA), around 30% of cancer cases may be preventable through healthy lifestyle habits, including:
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Balanced nutrition
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Regular physical activity
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Avoiding tobacco
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Limiting alcohol consumption
Prevention and early detection go hand in hand.
