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Immune System: Common Causes And When To See A Doctor

Find answers to commonly asked questions about the Immune system.

What is the Immune System?

The immune system is the body’s defense against infections. It is comprised of many biological structures and processes within an organism that protects against disease.

Immune System Facts – How is the Immune System Designed and What is its Function?

A week immune system can occur at any age.


There can be various reasons for the development of weak immune system and determining the exact cause is essential to obtain proper treatment.


When the human body senses foreign substances which are called antigens., it works to recognize the antigens and to get rid of them.


The immune system is made up of a network of cells, tissues and organs that work together to protect the human body. An important set of cells involved are white blood cells which are called leukocytes. They come in 2 types and seek to destroy disease- causing organisms or substances.

What is the key to a healthy immune system?


  • The immune system is powered by 5 litres of blood and lymph

  • The white blood cells: phagocytes and lymphocytes protect you

  • Fever and inflammation are good signs

  • Sleep is very important

  • Some sun in good for the immune system

  • Stress is bad

  • Laughter helps as it releases dopamine and other feel-good chemicals in the brain

  • You need germs to stay healthy

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