Pernicious anaemia is an autoimmune condition that affects your stomach.
The NHS explains: “An autoimmune condition means your immune system, the body’s natural defence system that protects against illness and infection, attacks your body’s healthy cells.
According to the health body, pernicious anaemia causes your immune system to attack the cells in your stomach that produce the intrinsic factor – a protein which helps your body to absorb vitamin B12.
“The exact cause of pernicious anaemia is unknown, but it’s more common in women around 60 years of age,” it adds.
