What it is
Stem cells are cells that have not yet become a single, specialized type. Unlike a nerve cell or a skin cell, which have fixed jobs, a stem cell can divide to make more cells and, depending on its type, can develop into other kinds of cells. Scientists describe them by where they come from and how flexible they are.
You may hear about several kinds: blood-forming stem cells found in bone marrow and cord blood; mesenchymal stem cells (MSCs), which are discussed in connection with tissues such as bone marrow, fat and umbilical cord; and embryonic or lab-made (induced) stem cells, which are mostly studied in research settings. Related products such as exosomes are also marketed, and they are not the same as stem cells.
Being a stem cell in a laboratory does not mean a product is proven or safe for a given use. Whether a particular product is appropriate for a particular person is something only a licensed clinician can decide after an evaluation.
How it’s traditionally been approached
The clearly FDA-approved use of stem cells is the transplant of blood-forming stem cells, taken from bone marrow or cord blood, for certain cancers and blood disorders. These transplants are done in specialized medical centers under established medical oversight.
By contrast, stem cell, MSC, bone marrow aspirate, adipose-derived (fat), umbilical cord or Wharton's jelly, and exosome products marketed for joints, back pain, sports injuries, skin, anti-aging or hair loss are generally NOT FDA-approved for those uses. The FDA has publicly warned consumers about unapproved stem cell clinics and products.
Outside of approved uses, the traditional route to experimental care has been through registered clinical trials, which have set rules, oversight and informed consent. You can search for registered trials on ClinicalTrials.gov, the public registry of studies. Describing something as a possibility in research is very different from it being an established treatment.
How the right provider may help
The right licensed provider, such as a physician in a relevant specialty, may help you understand where a stem cell topic fits in your situation. A visit generally involves reviewing your health history, discussing your goals, explaining established options, and being honest about what is and isn't approved. A good provider may also help you weigh alternatives, including conservative care or doing nothing.
Useful questions to ask: What exact product is this, and where does it come from? What is its FDA status for this use? What are the specific risks? What is the realistic chance of benefit? What are the alternatives? What is the total cost, disclosed up front? Can I get a second opinion, and can I walk away at any point?
Informed consent checklist: exact product and FDA status; specific risks; realistic chance of benefit; alternatives including doing nothing; total cost disclosure; and your right to walk away. This page is not a consent form and does not replace one from your clinician.
Red-flag checklist: guarantees of results; 'cure' or 'regrow' language; refusal to name the product or its FDA status; pressure to decide quickly; and discouraging a second opinion. Treatment abroad (medical tourism) carries materially higher risk because safety, sourcing and regulatory standards differ and complications are harder to address from a distance, so a vetted domestic provider is a safer first step. Providers.plus lists licensed providers you can explore.
The whole-person view
Body, mind and stress affect one another. Living with pain, an injury, a serious diagnosis or worry about aging can be stressful, and stress can in turn shape sleep, energy and how we make decisions. Hope is understandable, and it can make marketing promises feel more persuasive than they should.
Body-based support, such as the approaches offered through Somatic Experiences, may help some people feel more settled in their bodies while they navigate health choices. Talk therapy through Therapists.plus may help you sort through fear, pressure or difficult decisions with a trained listener. These are complementary supports, not substitutes for medical care.
Somatic Experiences: nervous system regulation →Somatic Experiences: embodiment and movement →Therapists.plus: mind body connection →
Keep in mind
- Blood-forming stem cell transplants for certain cancers and blood disorders are the clearly FDA-approved use; most other marketed stem cell, exosome and similar products are generally not FDA-approved for those uses.
- Reported risk categories from unapproved products include infection, immune reaction, tumor formation at the injection site, and permanent injury when products are injected into the eye or spine.
- Serious conditions should be guided by licensed professionals. If you suspect a problem, report it through the FDA's MedWatch safety reporting program and to your state medical board. For emergencies call 911; in a crisis call or text 988.
- Ask about registered clinical trials on ClinicalTrials.gov as a legitimate route to experimental care.
Not sure where to start? Answer a few gentle questions and choose who you’d like to hear from.
Frequently asked questions
What are stem cells in simple terms?
Stem cells are cells that can make copies of themselves and, depending on the type, develop into more specialized cells. They are often described as the body's raw material. Having this ability does not mean every stem cell product is proven or safe for every use.
What are stem cells used for that is FDA-approved?
The clearly FDA-approved use is blood-forming stem cell transplants from bone marrow or cord blood for certain cancers and blood disorders. These are performed in specialized medical settings. A licensed clinician decides if one is appropriate.
Are stem cell therapies for joints, back pain or anti-aging FDA-approved?
Generally no. Stem cell, MSC, bone marrow aspirate, adipose-derived, umbilical cord or Wharton's jelly and exosome products marketed for joints, back pain, sports injuries, skin, anti-aging or hair loss are generally not FDA-approved for those uses. The FDA has warned the public about unapproved clinics and products.
What are the risks of unapproved stem cell treatments?
Reported risk categories include infection, immune reaction, tumor formation at the injection site, and permanent injury from unapproved products injected into the eye or spine. Risks vary by product and procedure. Ask a licensed provider about specific risks before deciding.
How can I spot a questionable stem cell clinic?
Watch for guarantees of results, 'cure' or 'regrow' language, refusal to name the product or its FDA status, pressure to decide quickly, and discouragement of a second opinion. Any one of these is a reason to pause and seek another opinion.
How do I report a problem or find a legitimate trial?
You can report a suspected problem through the FDA's MedWatch safety reporting program and to your state medical board. To explore legitimate experimental care, search ClinicalTrials.gov for registered clinical trials and discuss them with your clinician.
Educational resource. Safe Stem Cells shares general information and connects people with independent providers. It is not medical advice, diagnosis or treatment. Talk with a licensed professional about your health.