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Chapter 10 Selected Diseases and Disorders of the Digestive System

10p1 Digestive System Diseases in Canada and Common Signs and Symptoms

Zoë Soon

Overview of Digestive System Disease Statistics in Canada – FYI

  • 10% of all hospitalizations involve digestive diseases.
  • Approximate healthcare expenditure: $18 billion annually.
  • 30,000 deaths per year due to digestive diseases.
  • Canada has the highest incidence globally of:
    • GI ulcers
    • Inflammatory bowel disease (IBD)
  • Digestive cancers, mainly colon cancer, are the second leading cause of cancer-related deaths in Canada, after lung cancer.
  • Heartburn affects over 5 million Canadians weekly.
  • Over 50% of Canadians develop hemorrhoids during their lifetime.
  • Annually, 50 million people worldwide suffer from traveler’s diarrhea.
  • Diarrheal diseases contribute to 1.8 million deaths worldwide each year.

Maintaining Digestive Health

  • Following Health Canada Food Guide is crucial.
  • Reduce:
    • Processed meats
    • Sugar
    • Burned food
    • Fast food
    • Alcohol
  • A healthy diet supports digestive health throughout life.

Common Signs and Symptoms of Digestive Disorders

General Symptoms

  • Anorexia (loss of appetite)
  • Nausea
  • Vomiting
  • Bulimia (binge-purge cycle; may be linked to psychological factors)

Causes of Nausea & Vomiting

  • Infections
  • Systemic issues (e.g., uremia — elevated urea in blood)
  • Emotional stress and psychological factors.
  • Increased intracranial pressure (e.g., from neurological disease):
    • Can cause nausea, vomiting, loss of appetite.

Anorexia

  • Two types:
    1. Loss of appetite due to:
      • Body undergoing infection or trauma.
      • Energy diverted to healing.
    2. Psychological anorexia (Anorexia nervosa):
      • psychological disorder involving fear of weight gain and abnormal eating behaviors.

Additional Factors Causing Nausea & Vomiting

  • Medications
  • Pain or reflux may also cause nausea or vomiting.

Preceding or Associated Conditions

  • Nausea and vomiting often precede or accompany symptoms like anorexia.
  • These symptoms may recur during progressive disease or stressful events.

Summary

  • Digestive symptoms like anorexia, nausea, and vomiting can be caused by a variety of physical, systemic, or psychological factors.
  • Recognizing these signs is vital for early diagnosis and intervention.
  • Maintaining a balanced diet and avoiding known irritants can help prevent digestive disorders.

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