Combating Anemia and Fatigue

Core Conclusion

Over 70% of multiple myeloma patients experience anemia (hemoglobin < 100 g/L) at presentation, and anti-myeloma induction coupled with targeted erythropoietin therapy reverses cancer fatigue in over 80% of responsive patients within 2 to 3 cycles.

Detailed Points

• (1) Why Anemia Occurs in Myeloma: Anemia (a low red blood cell count) happens for a few interconnected reasons. First, as myeloma cells multiply, they physically crowd out the healthy, normal blood-forming cells inside your bone marrow. Second, the disease creates a state of chronic inflammation that disrupts your body's ability to use iron properly (by increasing a regulator called hepcidin), starving your body of the building blocks it needs to make red blood cells. Finally, myeloma can cause kidney damage, which drastically reduces the production of natural hormones needed to stimulate red blood cell growth, further worsening your fatigue.
• (2) Criteria for Using ESAs or Blood Transfusions: If your anemia becomes severe, your doctor has tools to help, but they will first run blood tests to ensure you don't simply have an easily fixable iron, folate, or vitamin B12 deficiency.

  • ESAs (Erythropoiesis-Stimulating Agents): If your hemoglobin level falls below 10 g/dL, your doctor may prescribe ESAs (like erythropoietin or darbepoetin alfa) as subcutaneous injections to kickstart your red blood cell production. The goal is to raise your hemoglobin just enough to relieve symptoms and avoid transfusions, strictly keeping it below 12 g/dL to prevent dangerous side effects like high blood pressure or blood clots. If your hemoglobin does not improve by at least 1 to 2 g/dL after 6 to 8 weeks, these medications are typically discontinued.
  • Blood Transfusions: If your anemia is severe and causing immediate symptoms (like shortness of breath or a rapid heartbeat), direct blood transfusions are a simple, highly beneficial intervention to rapidly improve your well-being.
• (3) The Relationship Between Treatment Response and Anemia Improvement: Interestingly, the absolute best treatment for your anemia is successfully treating the myeloma itself. Guidelines recommend using ESAs mainly if your anemia does not respond to your definitive myeloma therapies. As your chemotherapy and targeted treatments successfully kill the myeloma cells, the crowding in your bone marrow will clear out, and your body's natural ability to produce healthy red blood cells will usually bounce back on its own.
• (4) Non-Pharmacological Management of Fatigue: You have a lot of power to combat fatigue at home! While it feels counterintuitive when you are exhausted, staying physically active with gentle, doctor-approved exercises—like walking, swimming, yoga, or tai chi—is proven to lessen fatigue and help prevent depression. Learning to pace yourself and conserve your energy is also helpful. Furthermore, adding self-care practices like meditation, acupuncture, massage, or spending time outside can significantly boost your energy and mental health.
• (5) Distinguishing Between Disease-Related and Treatment-Related Fatigue: When talking to your doctor, it is helpful to understand where your fatigue is coming from so they can treat the root cause:

  • Disease-related fatigue: This is caused directly by the myeloma itself. It stems from the anemia, the physical toll of persistent bone pain, weight loss, or reduced kidney function.
  • Treatment-related fatigue: This is a direct side effect of your cancer therapies. For example, some myeloma medications suppress your bone marrow and cause anemia directly. Other foundational drugs, like steroids (dexamethasone), can cause severe insomnia and nighttime restlessness, leaving you with daytime sleepiness and exhaustion.

Always communicate openly with your care team about your sleep and energy levels so they can adjust your medication doses or timing to help you feel your best.

The above content is sourced from the following references

• EHA–EMN Evidence-Based Guidelines for diagnosis, treatment and follow-up of patients with multiple myeloma
• NCCN Guidelines for Patients® Multiple Myeloma
• Singapore Myeloma Study Group consensus guidelines for the management of patients with multiple myeloma
• Patient Handbook
• Multiple Myeloma Disease Overview
• Coping with Multiple Myeloma: Managing Stress & Anxiety
• Multiple Myeloma Treatment Overview