pernisiöösianemia
Pernisiöösianemia is a chronic autoimmune disease that affects the stomach and impairs the absorption of vitamin B12. It is characterized by the body's immune system attacking the parietal cells in the stomach lining. These parietal cells are responsible for producing intrinsic factor, a protein essential for the absorption of vitamin B12 in the small intestine. Without sufficient intrinsic factor, vitamin B12 cannot be properly absorbed, leading to a deficiency.
Vitamin B12 is crucial for the production of red blood cells and for the healthy functioning of
The exact cause of pernicious anemia is not fully understood, but it is believed to have a