IMMUNOLOGY

Detailed explanation-1: -Bad diet rich in saturated fats, sugar, and salt, smoking and drinking alcohol, too much or not enough physical exercise, bad hygiene (especially not washing your hands well), stress and lack of having fun and relaxation have a negative impact on our immune system.

Detailed explanation-2: -Blood tests. Blood tests can determine if you have typical levels of infection-fighting proteins (immunoglobulins) in your blood and measure the levels of blood cells and immune system cells. Having numbers of certain cells in your blood that are outside of the standard range can indicate an immune system defect.

Detailed explanation-3: -The immune system is a complex network of organs, cells and proteins that defends the body against infection, whilst protecting the body’s own cells. The immune system keeps a record of every germ (microbe) it has ever defeated so it can recognise and destroy the microbe quickly if it enters the body again.