About this symptom
Unintentional weight loss means losing body mass without choosing to diet or increase physical activity. It is a symptom rather than a diagnosis and, by itself, does not prove cancer.
What matters most
Possible causes include a change in appetite, stress, digestive disorders, thyroid disease, diabetes, infections, medication effects and other conditions. Some causes are serious, so a continuing unexplained change deserves evaluation.
Symptoms and reasons to seek help
Record your previous and current weight, the time interval, appetite, food intake, exercise and medication changes. Tell the clinician about thirst, bowel changes, night sweats, fever, fatigue and other new symptoms.
How it differs from similar conditions
Weight loss does not point to one particular illness, and cancer is not the only consideration. Even if a stressful period seems relevant, persistent weight loss should not be dismissed without checking for other causes.
Assessment and investigations
A family doctor or general physician reviews the pattern of change, medical history and examination findings. Blood tests and targeted investigations are chosen according to the symptoms rather than ordered indiscriminately.
Care options and limitations
Care focuses on the identified cause. Nutritional advice and follow-up may also help, but using supplements or appetite boosters without assessing the underlying issue can delay diagnosis.
When emergency help is needed
Fainting, severe weakness with dehydration, heavy bleeding, intense pain or rapid deterioration call for emergency medical attention rather than a routine appointment. In serious cases call 103 or 112.
Related information
Enlarged lymph nodes; A lump under the skin; Clinical oncology consultation.
Signs and symptoms
Record your previous and current weight, the time interval, appetite, food intake, exercise and medication changes. Tell the clinician about thirst, bowel changes, night sweats, fever, fatigue and other new symptoms.
Diagnosis and tests
A family doctor or general physician reviews the pattern of change, medical history and examination findings. Blood tests and targeted investigations are chosen according to the symptoms rather than ordered indiscriminately.
Care and treatment approaches
Care focuses on the identified cause. Nutritional advice and follow-up may also help, but using supplements or appetite boosters without assessing the underlying issue can delay diagnosis.
When to seek urgent care
Fainting, severe weakness with dehydration, heavy bleeding, intense pain or rapid deterioration call for emergency medical attention rather than a routine appointment. In serious cases call 103 or 112.
Frequently asked questions
Can stress cause weight loss?
Yes, but prolonged unintentional weight loss should not automatically be attributed to stress before other causes are considered.
Should I see an oncologist first?
Not necessarily. A family doctor or general physician can begin assessment and refer to a specialist according to findings.
When should I avoid delaying an appointment?
Arrange an assessment promptly if the weight loss continues, becomes substantial or occurs alongside fever, weakness or other new symptoms.
Information sources
Medical source links used when preparing this article.
Important information
A medical consultation is needed for diagnosis and treatment recommendations.
Self-treatment can be harmful to your health.
