Nausea and a Loss of Appetite With Weight Loss. Although unpleasant, nausea and a loss of appetite are generally not harmful to the body. Nausea can occur for a variety of simple reasons, including simple food aversions, pregnancy and fear. Loss of appetite, or anorexia, generally follows a bout of nausea, as the stomach has no desire to welcome food. Occasionally, these trivial symptoms continue long enough to lead to weight loss. At this point, the condition becomes quite serious and dangerous. The University of Illinois Medical Center at Chicago says a wide variety of diseases and infections can cause nausea and loss of appetite. Infections might include influenza, kidney infection and hepatitis, while diseases might include cirrhosis of the liver, congestive heart failure and pancreatitis. These examples are only a few of the many conditions that cause nausea and anorexia. As these infections and diseases overwhelm the body, a variety of cells and chemicals are released to fight off the intruders. Although these chemicals are helpful to the body, they cause a severe loss of appetite. As the disease runs its course, weight loss is likely to occur. Patients with anorexia nervosa exhibit an unusual obsession with food and weight loss, often starving themselves to achieve a lower weight. Although the condition can occur in men or women of any age, anorexia nervosa is most common among female teenagers. In an effort to lose weight and achieve a thinner body, patients with anorexia refuse to eat. Over time, this deliberate avoidance of food causes the mind to reject the idea of food. Although the patient may be biologically hungry, she has no appetite and feels nauseated at the thought of food. Naturally, a dangerous amount of weight loss occurs. What causes nausea or vomiting? Acute gastritis and nausea and vomiting Central causes of nausea and vomiting Nausea and vomiting associated with illness Nausea and vomiting from medications and medical treatments Nausea and vomiting and bowel. Numerous metabolic abnormalities and psychiatric diagnoses also may cause nausea and vomiting. Third, if no etiology can be determined, use empiric therapy to treat symptoms. An algorithm for the evaluation of nausea and vomiting is provided in Figure 1.1. A variety of emotional disorders, including depression, anxiety and stress, cause a general loss of appetite. As the Conquering Stress website says, . If the emotional disorder goes unresolved, continued loss of appetite leads to unhealthy weight loss and significant lack of energy. Nausea and loss of appetite are common side effects of various medications. These side effects are not detrimental if a person is only required to take the medication for a few days. However, the symptoms may never dissipate if regular use of the medication is necessary. For example, the drugs used in chemotherapy are known to trigger these symptoms. In fact, the Cancer Connect website says . Other dangerous side effects include dehydration, anemia, electrolyte imbalances, kidney problems and heart problems. If the nausea, anorexia and weight loss continue for a long period of time, they may eventually lead to death. What are the Most Common Causes of Nausea and Weight Loss? Nausea and weight loss are symptoms of a wide variety of health disorders. Digestive disorders and starvation due to eating disorders, such as anorexia, are common causes. Certain types of cancer and their treatments can also cause these symptoms. These symptoms can occur independently, but they commonly manifest together. Nausea is a feeling of abdominal discomfort, dizziness, and the urge to vomit. Weight loss is a reduction of total body mass because of fluid, bone, or muscle tissue wasting. A person will experience nausea during starvation because of lack of food and fluid intake. The lack of nutrients will produce high levels of chemicals called ketones, which will trigger the nausea and vomiting center in the brain. Loss of appetite often develops with nausea and vomiting, and weight loss occurs if the lack of food or fluids is significant and prolonged. What causes nausea and vomiting in people with cancer? Nausea and/or vomiting in the person with cancer can be caused by many different. Discussions By Condition: I cannot get a diagnosis. Chronic nausea, vomiting, diarrhea, weight loss Posted In: I cannot get a diagnosis. 4 Replies Posted By: RachelBullets August 30, 2008 10:26 PM I'm a 20 year old female who began having stomach I also. Some eating disorders, such as anorexia and bulimia, are forms of starvation, and may cause nausea and weight loss. Anxiety and nausea often appear together in patients with these psychiatric problems. These symptoms may also be caused by a multitude of digestive diseases. Stomach flu, liver disease, and intestinal disorders are some of the diseases that can cause nausea and vomiting. Again, loss of appetite often follows nausea, which will then cause weight loss. Irritation, blockage, or infection may spur the diseases that manifest with these symptoms. Cancer is another common cause of nausea and weight loss. Stomach, pancreatic, or any form of intestinal cancer, such as colon cancer, can cause these symptoms. Nausea may be traced to malignant growths and hormonal imbalances. When these occur, proteins and calories are usually not absorbed properly, resulting in weight loss. Weight loss due to cancer is different from starvation. Starving individuals can increase their metabolic rate to counteract muscle wasting. Find possible causes of nausea or vomiting based on specific factors. Check one or more factors on this page that apply to your symptom. Triggered or worsened by. Disorders And Conditions That Can Cause Anorexia, Weight Loss, Or Vomiting . Other symptoms can include anorexia, weight loss, nausea. Cancer patients are unable to adjust their metabolic rate and waste proteins. This can lead to progressive weight loss and wasting of the muscles. The treatments of cancer, such as radiation and chemotherapy, can also cause nausea and weight loss.
Chemotherapy drugs can damage stomach cells, which in turn release a chemical called serotonin. This substance can transmit a signal to the part of the brain responsible for vomiting. Radiation therapy directed at the stomach area normally causes nausea one to two days after the treatment. Due to the loss of appetite and the impaired metabolic process, weight loss may happen, especially in the late stages of the disease.
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