Health and disease

• Communicable disease is

  A disease that can spread between organisms
• Non-communicable disease is

  A disease that doesnt spread between organisms
• Malignant tumours are cancerous and can spread to other parts of the body
• Benign tumours are non cancerous and do not spread to other parts of the body.
• Coronary heart disease

  • Coronary arteries narrow due to build up of fat.
  • causes reduced blood flow
  • causes lack of oxygen to heart
• • Artificial hearts are unlikely to be rejected and they allow the heart to recover
  • However, they can be expensive and cause blood clotting leading to strokes
• The two common treatments for coronary heart disease are:

  1. Statins
  2. Stents
• Statins - drugs taken to decrease blood cholesterol levels. These help slow down the build up of fat
• Stents - Inserted to keep coronary arteries open. Over time, the artery can narrow again. Drugs must also be taken to prevent blood clots