Below are 20 early warning signs that may suggest cancer could be developing in your body, including the types of symptoms hinted at in the image—digestive issues, unexplained pain, and changes in skin or bodily function.

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1. Unexplained Weight Loss

Losing weight without trying—especially more than 5–10% of your body weight—can be an early sign of several cancers.

2. Persistent Fatigue

Feeling exhausted even after resting may be linked to blood cancers, colon cancer, or other conditions.

3. Unusual Bleeding

Blood in urine, stool, or coughing blood should never be ignored.

4. Changes in Bowel Habits

Constipation, diarrhea, or changes in stool shape (thin or pencil-like) lasting more than a few weeks can signal colon issues.

5. Blood in Stool

Dark, tarry, or bright red stool can indicate internal bleeding, often related to the digestive tract.

6. Ongoing Abdominal Pain or Bloating

Persistent stomach discomfort or bloating may be associated with ovarian, stomach, or colon conditions.

7. Difficulty Swallowing

If swallowing becomes painful or feels like food is stuck, it may be linked to throat or esophageal issues.

8. Persistent Indigestion or Heartburn

Frequent heartburn that doesn’t improve with medication should be evaluated.

9. A Lump or Thickening Anywhere

A new lump in the breast, neck, groin, or testicles can be a warning sign.

10. Changes in a Mole

Look out for irregular shapes, growth, bleeding, or changing color.

11. Skin Sores That Won’t Heal

A sore that stays open for weeks may indicate skin-related conditions.

12. Persistent Cough or Hoarseness

A cough lasting longer than 3 weeks can be linked to lung or throat issues.

13. Shortness of Breath

Sudden breathing trouble without a clear reason may signal something serious.

14. Chronic Pain (Especially Back or Bone Pain)

Pain that lingers and worsens without injury should not be dismissed.

15. Night Sweats

Drenching night sweats can be linked to lymphoma or infections.

16. Frequent Fevers

Unexplained, recurring fevers may indicate blood cancers or immune disorders.

17. Changes in Urination

Blood in urine, increased frequency, or pain while urinating can signal bladder or prostate issues.

18. Unusual Breast Changes

Dimpling, nipple discharge, swelling, or redness should be examined.

19. Persistent Itching or Skin Yellowing

Severe itching or yellow skin/eyes may suggest liver or bile duct problems.

20. Unexplained Pain or Burning When Using the Bathroom

Pain during bowel movements or urination may indicate irritation—or deeper concerns.

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When Should You See a Doctor?

If any symptom lasts more than 2–3 weeks, becomes worse, or comes with fatigue and weight loss, it’s time to speak to a healthcare professional. Early checks like blood tests, stool tests, ultrasound, or screening procedures can rule out serious conditions—or detect problems early when treatment is more effective.

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