Diseases by yurtgc548


									What are some diseases
that you know about?
• A disease is an abnormal condition
  that prevents the body from
  functioning properly.
• Some types of diseases include
  communicable, non-communicable or
• A disease that can not be spread from
  person to person.
• Non-communicable disease may result
  from genetics, diet, smoking or other
• Examples: diabetes, cancer, asthma
       Genetic Diseases
• An illness caused by abnormalities in
  genes or chromosomes.
• Some diseases are caused partly by
  genetics and partly by other factors.
• Examples: sickle cell anemia, cystic
  fibrosis, down syndrome
 Communicable Diseases
• A disease that can be spread from
  person to person.
• Sometimes communicable diseases
  are considered contagious or
• Examples: a cold or the flu
 Communicable Diseases
• When a person “catches” a
  communicable disease, a germ has
  actually entered their body.
• Germs are tiny organisms (living
  things) that may cause disease.
  – In many cases germs are too small for us
    to see them, so we don’t know we have
    them until we have symptoms (sore throat,
    cough, fever, etc)
• Bacteria and viruses are germs.
• Bacteria live EVERYWHERE!
• Have you ever heard of people
  becoming sick after eating an
  undercooked hamburger?
  – the bacteria that can invade your
    body if hamburger is tainted with
    bacteria and is not cooked is E.
• Remember that not ALL
  bacteria are bad. Some
  bacteria are good for our
  bodies and keep things in

• Viruses must have a host to survive,
  grow and reproduce.
  – A host is a plant or animal in which
    another organism lives. Viruses can’t live
    outside of other living cells.
• Once inside the body, viruses spread
  and make people sick.
• Viruses cause chicken pox, measles,
  and flu
    Your Body’s Defenses
• The skin is the first line of defense (it
  keeps germs from getting into your
• Other defenses:
  – Mucous membranes that line mouth,
    throat, lungs and bowels
  – Saliva and tears
  – Mucous made in nose, throat and lungs
  – Acid in stomach
   How to Keep Your Body
• Respiratory System
  – Exercise makes lungs strong and make
    you breathe in more oxygen
  – Keep harmful things out of your lungs
    (such as smoke)
   How to Keep Your Body
• Circulatory System
  – Your heart is a muscle, so it needs
  – Eat a variety of healthy foods and avoid
    foods high in unhealthy fats
  – Eat lots of fruits and vegetables
  – Avoid soft drinks and sugary fruit drinks
  – Don’t smoke-it can damage the heart and
    blood vessels
      How to Keep Your Body
• Digestive System
  –   Eat lots of healthy foods
  –   Drink lots of water
  –   Eat fruits and vegetables
  –   Eat breads and cereals with bran
     How to Keep Your Body
• Nervous System
  – Eat healthy foods (they contain potassium and
    calcium which are 2 minerals important to the
    nervous system)
  – Do a lot of exercise
  – Wear a helmet when you ride bikes or play sports
    where there could be contact to your head
  – Don’t drink alcohol, take drugs or use tobacco
  – Use your brain for challenging activities (such as
    puzzles, reading, playing music, art, etc)

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