Health issues

Question 1

What is the difference between communicable and non-communicable diseases?

Answer 1

• Communicable disease eg TB and Flu are caused by pathogens that can be spread from one person to another.
• Non-communicable diseases cannot be transmitted from one person to another, eg heart disease and arthritis

Question 2

How can different diseases interact?

Answer 2

• defects in the immune system mean the individual is more likely to suffer from infectious disease
• viruses living in cells can be trigger for cancer
• immune reactions caused by a pathogen can trigger allergies , eg skin rashes and asthma

Question 3

What is a risk factor?

Answer 3

Aspects of a person’s lifestyle, or a substance in the environment that have been shown to be liked to an increased rate of disease.

Question 4

What is a casual mechanism of disease?

Answer 4

A casual mechanism is a proven link between one factor influencing another.

Question 5

Give three examples of a casual mechanism of disease.

Answer 5

• smoking and lung cancer
• alcohol and liver disease
• obesity on type 2 diabetes

Question 6

What is cancer?

Answer 6

unregulated growth on abnormal cells

Question 7

What are the two different types tumours?

Answer 7

1-Bening tumours stay in one place, do not invade others organs or tissues
2-Malignant tumours can spread around the body in the blood and lymphatic system and invade other organs

Question 8

What are the risk factors of cancer?

Answer 8

Clear genetic risks;

• chemicals such as is asbestos
• cigarette smoke can cause tumours to form=carcinogens
• radiations: UV and x rays