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