If weight loss occurs without changes in your diet, physical activity, or lifestyle—and it happens quickly and noticeably—it’s a sign that shouldn’t be ignored.
Possible diseases in which sudden weight loss may occur:
oncological processes in the stomach, pancreas or liver (affect digestion and metabolism)
lung or esophageal cancer (decreased appetite, difficulty swallowing)
diseases such as leukemia and lymphoma (disorders in the functioning of the immune system and metabolic processes)
Of course, weight loss can have other causes—hormonal changes, chronic infections, stress—but sudden, unexplained weight loss always deserves medical attention.
2. Constant fatigue and weakness
This isn’t just tiredness after a long day or lack of sleep. When you feel exhausted and don’t get better with rest or sleep, it could be a symptom of an internal problem.
Diseases associated with chronic fatigue:
leukemia and lymphoma
diseases of the stomach or intestines that cause internal bleeding → anemia
liver function disorders that alter metabolic processes
Fatigue can increase gradually, be combined with irritability, difficulty concentrating, or a feeling of “emptiness.” All of this is a reason for an examination.
