For example, an adult who weighs 70 kilograms and loses 3.5 kilograms or more unintentionally should consider seeking medical advice, especially if the change continues or occurs alongside other symptoms.
More rapid weight loss, significant weakness, or an inability to maintain adequate food intake warrants earlier assessment.
Do not wait until weight loss becomes dramatic before discussing it with a healthcare professional.
Why might a doctor recommend endoscopy?
If unexplained weight loss occurs alongside persistent upper abdominal pain, early satiety, vomiting, anemia, or difficulty swallowing, a clinician may recommend upper endoscopy to investigate the upper digestive tract.
The procedure can reveal ulcers, inflammation, abnormal tissue, or a mass. If necessary, the doctor can obtain biopsies to establish a diagnosis.
Additional tests may be required because unexplained weight loss can originate from many organs and systems. These may include blood tests, imaging, or investigations of other parts of the digestive tract.
The purpose is not to assume the worst. It is to identify the cause rather than allowing a potentially serious problem to remain unexplained.
What Exactly Is an Upper Endoscopy?
An upper gastrointestinal endoscopy is a commonly used medical procedure that allows a doctor to examine the lining of the upper digestive tract.
A thin, flexible instrument with a light and camera is passed through the mouth and guided into the esophagus, stomach, and duodenum, which is the first part of the small intestine.
The procedure is commonly used to investigate persistent upper abdominal pain, unexplained anemia, gastrointestinal bleeding, swallowing difficulties, recurrent vomiting, and other symptoms that may require direct inspection.
What happens during the procedure?
Before an endoscopy, patients are generally asked to avoid food and drink for a specified period. The medical team will provide instructions based on the planned procedure and the patient's health.
Throat-numbing medication and sedation may be offered, depending on local practice and individual circumstances.
The endoscope allows the doctor to inspect the digestive lining in detail. If an abnormal area is seen, small tissue samples can be collected for examination under a microscope.
These biopsies are particularly important when cancer is suspected because visual inspection alone cannot always establish whether a lesion is malignant.
The procedure commonly takes a relatively short time, although preparation, sedation, and recovery can make the overall visit longer.
Most patients tolerate upper endoscopy well. Like any medical procedure, it carries risks, including reactions to sedation, bleeding, and rarely, perforation. The medical team weighs these risks against the potential benefits when deciding whether the examination is appropriate.
Can an endoscopy detect cancer early?
Endoscopy can identify suspicious abnormalities and allow tissue sampling, making it an important diagnostic tool for cancers of the esophagus and stomach.
However, it is important to distinguish diagnostic testing from routine screening.
A diagnostic endoscopy is performed because symptoms, risk factors, or previous test results suggest that further investigation may be needed. Screening refers to testing people who do not have symptoms, usually as part of a defined program for a population at elevated risk.
Not everyone needs an endoscopy after experiencing heartburn, bloating, or mild indigestion. The decision depends on the person's age, symptom pattern, medical history, family history, and local clinical guidelines.
A doctor may initially recommend other measures, such as testing for H. pylori or trying appropriate treatment, when symptoms are mild and there are no concerning features.
The goal is to choose the right investigation at the right time.
Who May Need Earlier Evaluation?
Although anyone can develop a digestive condition, some people have a higher risk of serious disease and may need a lower threshold for investigation.
Factors that can influence a clinician's decision include:
Older age: New digestive symptoms in older adults may warrant more investigation than similar symptoms in younger people, although age thresholds differ among guidelines and regions.
Family history: A close relative with stomach or esophageal cancer may affect an individual's risk, particularly when the cancer occurred at a younger age or when multiple relatives are affected.
Helicobacter pylori infection: This bacterium can cause chronic stomach inflammation and peptic ulcers and is a recognized risk factor for stomach cancer. Testing and treatment may be appropriate in certain circumstances.
Smoking and heavy alcohol use: These are established risk factors for several cancers, including cancers of the upper digestive tract.