Causes of Anemia during Pregnancy<span>. The cause of anemia truly comes down to how many red blood cells are being produced in the body and how healthy they are. A fall in </span>hemoglobin<span> levels during </span>pregnancy<span> is caused by a greater expansion of plasma volume compared with the increase in red cell volume.</span>
…it shouldn’t because that’s genetic
but ig by what they do or don’t support maybe but drop the options and i can answer it for you