Sudden and involuntary weight loss of 5 kg or more, without changing diet or physical activity, can be an early sign of cancer. This is because cancer cells change metabolism, resulting in increased energy expenditure.
Cancers that may be associated with unexplained weight loss:
Cancer of the stomach, pancreas or liver (affecting digestion and metabolism)
Lung or esophagus cancer (disrupts swallowing and appetite)
Blood cancers (leukemia, lymphoma) (affecting metabolism and the immune system)
If you notice persistent weight loss for no apparent reason, consult your doctor.
2. Constant fatigue and weakness
A feeling of constant fatigue, even after a sufficient rest, can be a sign of cancer alert. Unlike normal fatigue, cancer-related fatigue is persistent, intense, and does not improve with sleep or rest.
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Cancers potentially associated with fatigue:
Leukemia and lymphoma (affecting blood cell production and blood oxygenation)
Cancer of the colon or stomach (causing slow internal bleeding, which can lead to anemia)
Liver cancer (affecting detoxification and metabolism)
