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Decreased Appetite and Unexplained Weight Loss

From About.com

Updated: February 12, 2005

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A decrease in appetite is quite common during, for example, a bout of influenza or other relatively short-term illnesses. Appetite can also decrease in times of emotional upset, depression, boredom or anxiety. Dealing with the problem invariably causes appetite to return to normal.

Weight loss is clearly related to decreased appetite, but there are occasions when weight loss is unexplained and is not related to decreased appetite. When drastic weight loss reaches more than 10 pounds medical intervention is required. Typically, dramatic weight loss is due to an inability to digest and absorb food properly, or, the intake of food is outstripped by the energy needs of the body.

The Causes of Decreased Appetite Are:

  • Psychological issues (e.g. depression) or disorders (anorexia)

  • Amphetamines or some medications

  • Hypercalcemia (too much calcium)

  • Hypokalemia (too little potassium in the blood)

  • High alcohol intake

  • Viral hepatitis

  • Congestive heart failure

  • Cancer
  • The Causes of Decreased Absorption Are:

  • Digestive enzyme problems

  • Gallbladder problems

  • Small intestine problems

  • Parasitic infection

  • Some medications causing long-term diarrhea

  • Hyperthyroidism creating an excessive energy demand

  • Fever

  • Cancer

  • Amphetamine or drug misuse
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