Health and disease

• Health is the physical and mental well-being of a person.
• Disease is a group of conditions that can cause ill health
• A communicable disease is one that can spread from person to person.
• examples of a communicable disease is:

  • malaria
  • common cold
  • HIV
• A non communicable disease is one that cannot spread from person to person
• Examples of non communicable disease are:

  • cancer
  • heart disease
  • dementia
• Immune system is meant to detect and destroy pathogens
• Pathogens are responsible for communicable disease
• Mental health encompasses emotional, psychological and social well-being
• A mental illness is a disorder that affect mood, thinking and behaviour.
• Mental illness examples:

  • depression
  • anxiety