Why do we fall ill?

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Why do we fall ill?
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Questions to ponder

• What are the differences between bacteria and
  viruses?
• What diseases are caused by bacteria?
• Where do viruses live in the body?
• How do bacteria multiply?
• How do antibiotics work?

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Health

• It is a state of complete physical, mental and
  social well-being.

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Basic conditions

• Proper balanced and nutritious diet.
• Personal hygiene.
• Clean environment and surroundings.
• Healthy air, no pollution in the surrounding.
• Regular exercise.
• Proper rest.
• Good standard of living and economic status.

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Not comfortable?
Different appearance
Changes in functions of body
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Acute and Chronic
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Infectious diseases spread through

• Air Causes air-borne diseases due to bacteria,
  virus e.g., common cold, influenza, measles,
  tuberculosis.
• Food and water Is caused due to contaminated
  food and water that contains bacteria, virus,
  worm etc. Example, cholera, typhoid and
  hepatitis.
• Contact Many diseases spread by contact of
  infected person with the healthy person.
  Examples, fungal infection, scabies etc.AIDS and
  syphilis spread due to sexual contact.
• Body fluids Body fluids like blood, semen,
  mother milk when infected can also cause disease.
  Example, AIDS.

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• Germs can spread to the hands by sneezing,
  coughing, or rubbing the eyes and then can be
  transferred to other family members or friends.
  Simply washing your hands can help prevent such
  illnesses as the common cold or eye infections.

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Jaundice
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Antibiotics

• These are the chemicals (medicine, drugs) that
  block biochemical pathways important for
  bacteria. They are used for diseases caused by
  bacteria.

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Inflammation

• When an active immune system release many cells
  to the affected tissue to heat-off the
  disease-causing microbes it is called
  inflammation.
• Local effects caused on body due to inflammation
  areswelling, pain, fever and redness.

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