Noninfectious Disease

Mr. Fox 7th Grade Science Class

Immunity

• Noninfectious Disease – diseases that are not spread from person to person.

• What are some noninfectious diseases?

Allergies

• Allergy – a disorder in which the immune system is overly sensitive to a foreign substance, something not normally found in the body.

• Allergen – the substance that causes the allergy.

How it Happens

• The allergen gets into the body, and antibodies are produced.

• The body then releases a chemical called histamine, which is responsible for sneezing, watery eyes, rash… ect.

• The histamine causes the immune system to freak out about the allergen causing a much more violent reaction.

Asthma

• Asthma – respiratory disorder in which the passages narrow significantly.– Causes wheezing and shortness of breath– Attacks can also be triggered by stress and

exercise. – Asthma attacks can get so bad that emergency

medical help may be needed.

Diabetes

• A disorder in which the pancreas no longer produces insulin.

• High levels of glucose in the blood and the urine, but not in the cells.

• Effects if not treated – Blindness, Kidney failure, heart disease, loss of

limbs.

Cancer

• Most common Cancers in the US as of 2000• Men - Prostate, Lung, Large Intestine, Bladder• Women – Breast, Lung, Large Intestine, Uterus

Cancer

• A disease in which the cells multiply uncontrollably, destroying healthy tissue.

• Tumors – mass of abnormal tissue• Caused by carcinogens. Ultraviolet light from

the sun, tar from smoking, other chemicals.