Weight loss is a reduction of the total body mass, due to loss of fluid, body fat or adipose tissue. It can occur unintentional due to diseases such as cancer, AIDS, and a variety of other diseases.

Causes of unintentional weight loss

  • AIDS
  • Cancer,
  • Cardiac disease. Pulmonary disease.
  • Renal disease..
  • Neurologic disease,
  • Gastrointestinal disorders 
  • Connective tissue disease
  • Certain medications may cause weight loss as a side effect.
  • Some infectious diseases
  • Starvation
  • Stress