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Chapter 10 Selected Diseases and Disorders of the Digestive System

10p1 Digestive System Diseases in Canada and Common Signs & 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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