Health and Disease

• What is correlation in statistics?

  A link between two variables
• What happens in correlation when one variable changes?

  There is a corresponding change in the other
• What is causation?

  Increase in one results in increase in another
• How does causation differ from correlation?

  Causation implies direct influence, correlation does not
• What is a risk factor?

  Something that increases the risk of a condition
• How does a risk factor affect health?

  It increases the likelihood of developing a condition
• What is a non-communicable disease?

  A disease not transmitted between people
• What is alcohol also known as?

  Ethanol
• What condition does asthma affect?

  The respiratory system
• What does blood pressure measure?

  The force of blood against artery walls
• What causes cancer?

  Normal cells changing to grow uncontrollably
• What are common symptoms of depression?

  Depressed mood and loss of interest
• What does lifestyle refer to?

  How people choose to live
• What is obesity medically defined as?

  Being very overweight due to body fat
• What is stress in terms of health?

  The body's response to mental pressure
• What is the role of the immune system?

  To prevent disease in the body
• What is ionising radiation?

  Radiation that removes electrons from atoms
• What does the term "disease" refer to?

  Illness affecting plants and animals
• How can health be defined?

  As complete physical, mental, and social wellbeing