Ruler of hemoglobin (too low hemoglobin)?

I think it depends, is the root cause of low hemoglobin  loss of blood ? or lack of iron ? or vitamin b-12 or folate ? or the body has raw materials, but body isn't able to make rbc ?

Basically, would need to go deeper to find the root cause and then see what planet rules the function

Generally look into mars and saturn. If saturn its due to B12 as that is indicating unhealthy intestincal flora so no b12 is being produced. If mars, iron deficiency. In most cases its due to B12. 

Thank You!