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Low-calorie diets are also referred to as balanced percentage diets. Others may be driven to lose weight to achieve an appearance they consider more attractive. This can result from conditions that affect the digestive system. About one-third of unintentional weight loss cases are secondary to malignancy. Cardiovascular disease, especially congestive heart failure, may cause unexplained weight loss. Fungal illnesses, endocarditis, many parasitic diseases, AIDS, and some other subacute or occult infections may cause weight loss. Poor appetite can be a direct symptom of an illness, or an illness could make eating painful or induce nausea. Lack of food can result from: poverty, difficulty in shopping or cooking, and poor quality meals. Cancers to suspect in patients with unexplained weight loss include gastrointestinal, prostate, hepatobilary ( hepatocellular carcinoma, pancreatic cancer ), ovarian, hematologic or lung malignancies. Weight loss occurs when the body is expending more energy in work and metabolism than it is absorbing from food or other nutrients. Due to their minimal detrimental effects, these types of diets are most commonly recommended by nutritionists. Changes to metabolic demands can be caused by illness, surgery and organ dysfunction. Intentional weight loss is commonly referred to as slimming.
After reaching the desired body weight, the calories consumed per day may be increased gradually, without exceeding 2,000 net (i. It will then use stored reserves from fat or muscle, gradually leading to weight loss. For athletes seeking to improve performance or to meet required weight classification for participation in a sport, it is not uncommon to seek additional weight loss even if they are already at their ideal body weight. In addition to restricting calorie intake, a balanced diet also regulates macronutrient consumption. Cancer, a very common and sometimes fatal cause of unexplained ( idiopathic ) weight loss. Weight loss issues related to specific diseases include. Intentional weight loss is the loss of total body mass as a result of efforts to improve fitness and health, or to change appearance through slimming. Eating restrictions may also be imposed as part of treatment or investigations. Other losses: Conditions such as burns can be associated with losses such as skin exudates. There can also be losses from drains, including nasogastric tubes. Patients who have uremia often have poor or absent appetite, vomiting and nausea. Inability to eat can result from: diminished consciousness or confusion, or physical problems affecting the arm or hands, swallowing or chewing. Losses from the gastrointestinal can occur because of symptoms such as vomiting or diarrhea, as well as fistulae and stomas.
