Stress & the immune system

Immune System - 

Triggered by antigens. Some antigens such as pollen can produce allergic reactions in some individuals. (Hayfever) These can be carried on the surface of harmful disease causing pathagons such as viruses, bacteria or fungi. 

Natural Immunity - 

Consists of white blood cells (natural killer cells) that non-specifically destroy 'invading' pathogens, May be…