Health

• Health is the state of physical and mental well-being.
• Diseases, both communicable Communicable diseases and non-communicable, are major causes of ill health. Other factors including diet, stress and life situations may have a profound effect on both physical and mental health.
• Different types of disease may interact.

  • Defects in the immune system mean that an individual is more likely to suffer from infectious diseases.

  • Viruses living in cells can be the trigger for cancers.

  • Immune reactions initially caused by a pathogen can trigger allergies such as skin rashes and asthma.

  • Severe physical ill health can lead to depression and other mental illness.