3 doctors weighed in:

What are the causes of anemia?

3 doctors weighed in
Dr. Barry Rosen
Surgery
1 doctor agrees

In brief: Low RBCs

Anemia is a low red blood cell (rbc) count, also measured by hemoglobin, which is the oxygen-carrying protein within the rbc.
Anemia is secondary to decreased RBC production (bone marrow disease, nutrition, kidney dz, etc) or increased destruction ("hemolytic")/blood loss (surgery, trauma, GI bleeding, etc).

In brief: Low RBCs

Anemia is a low red blood cell (rbc) count, also measured by hemoglobin, which is the oxygen-carrying protein within the rbc.
Anemia is secondary to decreased RBC production (bone marrow disease, nutrition, kidney dz, etc) or increased destruction ("hemolytic")/blood loss (surgery, trauma, GI bleeding, etc).
Dr. Barry Rosen
Dr. Barry Rosen
Thank
Dr. Martin Rubenstein
Internal Medicine - Hematology & Oncology

In brief: Many

There are many causes including nutritional (iron, B12 or folic acid), inherited, blood loss, red cell destruction (hemolytic anemia), bone marrow failure states (aplastic anemia, myelodysplasia), leukemia, other cancers that involve the bone marrow, various chronic illnesses (anemia of chronic disorders) and kidney disease.
It is a big subject!

In brief: Many

There are many causes including nutritional (iron, B12 or folic acid), inherited, blood loss, red cell destruction (hemolytic anemia), bone marrow failure states (aplastic anemia, myelodysplasia), leukemia, other cancers that involve the bone marrow, various chronic illnesses (anemia of chronic disorders) and kidney disease.
It is a big subject!
Dr. Martin Rubenstein
Dr. Martin Rubenstein
Thank
Get help from a real doctor now
Dr. Peter Kurzweil
Board Certified, Internal Medicine
47 years in practice
16M people helped
Continue
111,000 doctors available
Read more answers from doctors