Why malarial disease is not occurs in blood anemic patient?

Ans:

Malarial parasite cannot live in a sickled red blood cell for two reasons. 

1.      First, the body sends sickled red blood cells to the spleen for elimination. The body senses that sickled red blood cells are improperly formed, so destroys as many sickled cells as possible. If a parasite is in the cell, it also is destroyed.

2.      Second, because the cell membrane of the sickled red blood cell is stretched by its unusual shape, it becomes porous. The sickled cell "leaks" nutrients, like potassium, that the parasite needs to survive, so the parasite dies. Because the malarial parasite cannot live in sickled cells, an individual with S hemoglobin is therefore resistant to the malaria.

The question is strange.Anemic pepole also get infected by malarial parasites. Rather it is reverse way.In Falciparum Malaria or P, vivax Malaria a Healthy Patient become Anemic after Malarial infestation.

Dr.Deepak