Nausea and vomiting.
Nausea is one of the seven early signals of stomach can.cer, but it is commonly neglected because the symptoms are few and infrequent in the early stages. When the condition progresses, nausea and vomiting worsen due to the tumor pressing on the stomach, resulting in bloating and reflux. In addition, can.cer therapy medicines might produce nausea and vomiting.
Constipation and Diarrhea
The development of stomach cancer results in digestive difficulties and poor digestive function. This is the source of constipation in persons with stomach cancer. In addition, gut bacterial illnesses can cause people to have diarrhea. These are two typical symptoms that lead people to become fatigued and experience a prolonged loss of appetite.
Black stools.

Black stools are one of the seven immediately visible indicators of stomach can.cer in its late stages. The cause is the burst of some blood vessels on the tumor, or ulcerated tumor lesions in the stomach, which produce bleeding.
Lose weight quickly.
Most can.cer patients experience rapid weight loss. Stomach can.cer is one of the diseases that causes the most rapid weight loss because it affects the digestive tract. Cancer impairs the stomach’s capacity to digest food and absorb nutrients
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