Traditional beliefs

• What was to be carried out if blood was thought to be out of balance?

  Bloodletting
• How was bloodletting carried out?

  • cutting into a vein
  • using leeches
  • placing heated cups over a cut/scratch
• What else was believed to unbalance the humours?

  Food
• How would they a humour imbalance caused by food?

  Give the patient a laxative to make them vomit