Sudden, unintentional weight loss of 5 kg or more without any changes in diet or exercise can be an early sign of cancer. This occurs because cancer cells alter the body’s metabolism, causing the body to burn more energy than usual.
Possible cancers linked to unexplained weight loss:
Lung or esophageal cancer (interfering with swallowing and appetite)
Blood cancers (leukemia, lymphoma) (affecting metabolism and immune function)
If you experience persistent weight loss without a clear reason, see a doctor for evaluation.
2. Persistent fatigue and weakness
Feeling constantly exhausted even after adequate rest can be a warning sign of cancer. Unlike normal fatigue, cancer-related fatigue is persistent, severe, and does not improve with sleep or rest.
Possible cancers linked to fatigue:
Leukemia and lymphoma (affecting blood cell production and oxygen delivery)
Colon or stomach cancer (causing slow internal bleeding, leading to anemia)
Liver cancer (affecting detoxification and metabolism)
If extreme fatigue is accompanied by pale skin, dizziness, or shortness of breath, seek medical help immediately.
3. Changes in the skin
The skin can reveal warning signs of internal cancer. Any new mole, bump, or skin discoloration that appears or changes over time should be examined.
Possible skin changes to watch for:
4. Persistent pain that does not go away
Chronic pain with no obvious cause may be an early sign of cancer. Cancer pain does not improve with rest or medication and may gradually worsen over time.
Possible cancers linked to persistent pain:
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