Anemia means having too few healthy red blood cells to carry adequate oxygen. Symptoms include fatigue, weakness, pale skin, shortness of breath and dizziness. The most common cause is iron deficiency, per the NHLBI.
Anemia is diagnosed with a blood test and has many causes — iron, B12 or folate deficiency, blood loss, chronic disease. Treatment depends on the cause. No supplement, including HemaRenew, is a substitute for diagnosis and treatment.