Short answer · Medically reviewed summary · Last updated: 2026-05-08
Multiple myeloma is not contagious and cannot be spread through casual contact, bodily fluids, or sharing personal space. It is a type of blood cancer that develops from abnormal plasma cells in the bone marrow, meaning there is zero risk to family members, caregivers, or friends when interacting with someone diagnosed with multiple myeloma. What causes multiple myeloma? Multiple myeloma occurs when plasma cells—a type of white blood cell responsible for producing antibodies—become malignant and multiply uncontrollably.
3 people with Multiple myeloma have shared their first-person experience on this question at DiseaseMaps.
Is Multiple myeloma contagious?
Is Multiple myeloma contagious? Clear, medically reviewed answer on transmission, with sources.
Multiple myeloma is not contagious and cannot be spread through casual contact, bodily fluids, or sharing personal space. It is a type of blood cancer that develops from abnormal plasma cells in the bone marrow, meaning there is zero risk to family members, caregivers, or friends when interacting with someone diagnosed with multiple myeloma.
What causes multiple myeloma?
Multiple myeloma occurs when plasma cells—a type of white blood cell responsible for producing antibodies—become malignant and multiply uncontrollably. These cancerous cells crowd out healthy blood-forming cells in the bone marrow. While the exact cause remains unknown, it is not triggered by viruses or bacteria, and it cannot be "caught" from another person. Research indicates that multiple myeloma is likely the result of complex genetic mutations that develop over a person's lifetime rather than being inherited from parents.
Why is there a misconception that it is contagious?
Because multiple myeloma is a serious, systemic illness, people sometimes mistakenly associate it with infectious diseases. The stigma often stems from a lack of public awareness regarding the difference between cancer and communicable diseases. It is vital to understand that living with, touching, or caring for a patient with multiple myeloma poses no health risk to others.
Are there environmental factors involved?
While multiple myeloma is not infectious, scientists are investigating various risk factors that may contribute to its development. These include:
- Age: The risk of developing multiple myeloma increases significantly with age, with most patients diagnosed after age 65.
- Race: Data shows that multiple myeloma is twice as common in African Americans compared to white populations.
- Chemical Exposure: Some studies suggest that long-term exposure to certain pesticides, herbicides, or industrial chemicals may be linked to an increased risk of developing the disease.
- Pre-existing Conditions: Individuals with Monoclonal Gammopathy of Undetermined Significance (MGUS) have a small annual risk (about 1%) of progressing to multiple myeloma.
Next steps
- Consult a hematologist-oncologist to discuss your specific diagnosis and treatment plan.
- Join the 217 community members on DiseaseMaps.org to share experiences and find emotional support.
- Visit the Multiple Myeloma Research Foundation (MMRF) for reliable patient education and clinical trial information.
Medical disclaimer: This content is for informational purposes only and does not constitute professional medical advice, diagnosis, or treatment.
References
- National Cancer Institute (NCI) - Plasma Cell Neoplasms
- NIH Genetic and Rare Diseases Information Center (GARD) - Multiple Myeloma
- Multiple Myeloma Research Foundation (MMRF) - Understanding the Disease
- American Cancer Society - What is Multiple Myeloma?
Posted Jul 19, 2017 by Larry 2100
Posted Jul 19, 2017 by Deb 2000
Posted Jul 20, 2017 by Tammy Gallet Ward 2000
