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Questions to Ask Before Adipose Stem Cell Therapy in Osaka

Published 2026.10.01 8 min read

Hello, I am Dr. Hidenori Shimada of Grand Green Osaka Umekita Clinic in Osaka, Japan.

If you are considering adipose-derived stem cell therapy in Japan as an international patient, the most useful step you can take is to prepare for your first consultation. This is a self-pay (non-insured) regenerative treatment, and whether it is appropriate for you can only be judged by a physician after an examination. This article outlines the questions worth bringing to a first conversation with Grand Green Osaka Umekita Clinic in Osaka (Umeda), so that you can decide with a clear picture rather than a marketing impression.

Start with what the treatment actually is

At Grand Green Osaka Umekita Clinic, the treatment uses mesenchymal stem cells taken from your own fat tissue. A very small amount of fat, about the size of a few grains of rice, is collected under local anesthesia. The cells are then cultured and expanded at a specialized facility and returned to your body by intravenous infusion. Both the collection and the infusion are done on an outpatient basis, without hospitalization.

Mesenchymal stem cells have been reported in research to secrete anti-inflammatory substances and growth factors that may support the repair of damaged tissue. However, research results vary between studies and between conditions, and these findings should not be read as a promise of any particular outcome for an individual. A good first question is simply: what does the evidence say about my specific condition, and how strong is it?

Questions about suitability and your medical history

Not everyone is a candidate for regenerative medicine, and the decision rests with the treating doctor. Before your consultation, it helps to gather information that the physician will almost certainly want to review. Consider preparing the following:

A summary of your diagnosis, including imaging reports or test results from your home country, ideally with an English or Japanese translation if available
A list of current medications and supplements, and any history of allergies, especially to local anesthetics
Past surgeries, ongoing treatments, and any conditions such as infections, autoimmune disease, or a history of cancer
The standard treatments you have already tried, and what your current doctors have recommended

It is reasonable to ask the physician directly whether stem cell therapy is suitable for you, whether it should be considered alongside standard care, and whether any of your conditions would make it inadvisable. Stem cell therapy should not be seen as a replacement for standard medical treatment, and a responsible clinic will discuss it as one option among others.

Understanding the legal framework in Japan

In Japan, regenerative medicine is provided under the Act on the Safety of Regenerative Medicine. Clinics must have a provision plan reviewed by a certified committee and submit it to the authorities before offering a treatment, and cell culture is carried out at facilities that meet national requirements. Because it is not covered by Japan’s public health insurance, the treatment is self-pay.

For an international patient, this means you can reasonably ask the clinic to explain which provision plan covers the treatment, how the cells are processed, and how your information is handled. You may also wish to check whether the treatment you are being offered is the same one described on the clinic’s official information page. Clear answers to these questions are a sign of a transparent practice, although they do not by themselves indicate how well the treatment will work for you.

Discussing risks, side effects, and costs openly

Every medical procedure carries risk. Fat collection under local anesthesia can involve bruising, discomfort, or infection at the collection site, and intravenous infusion of cells can be associated with reactions such as fever or allergic symptoms. Because the cells come from your own body, the risk of rejection is considered lower than with donor cells, but a lower risk is not the same as no risk. The physician should explain what side effects are possible, how they are monitored, and what happens if one occurs.

Cost is another point to confirm in writing before you decide. Fees for self-pay treatment are set by each clinic, so ask what is included, such as consultation, tests, fat collection, cell culture, each infusion, and follow-up, and whether any items are charged separately. Please refer to the clinic’s fee page and confirm the current details with the staff rather than relying on figures found elsewhere online.

Planning your trip and follow-up from abroad

Because the cells are cultured between the collection and the infusion, treatment generally involves more than one visit. If you live outside Japan, ask how the schedule is arranged, how long you would need to stay in Osaka, and what the timeline might look like for you personally. These details depend on your medical situation and the doctor’s plan, so they are best confirmed during your consultation.

It is also worth asking how follow-up will work once you are back home. For example, you may want to know whether you can send updates, how to reach the clinic if you have a concern, and how to share records with your regular doctor. Communication in your own language matters here. The clinic provides an information page for international patients, and you can ask in advance which languages are available for consultation and for consent documents.

A short checklist for your first consultation

To make the most of your appointment, you might bring a simple list of questions. The following points cover the main areas discussed above:

Is this treatment suitable for my condition, and what is the supporting evidence?
How does it fit with the standard treatments I am already receiving?
What are the possible risks and side effects, and how are they handled?
What is the full cost, and what is included?
How many visits are needed, and how long should I stay in Osaka?
How will follow-up be handled after I return home?

Adipose-derived stem cell therapy is a self-pay regenerative treatment offered under Japan’s regenerative medicine regulations, and its suitability, risks, side effects, and costs must be confirmed through a medical examination and consultation with a doctor. If you are considering a visit to Osaka, we encourage you to review the clinic’s treatment and fee pages and to contact the team with your questions before making any decision.

Before Your First Consultation

Ask about suitabilityDoctor decides after examination
Know Japan's rulesRegenerative medicine law
Confirm risksSide effects explained
Check self-pay costsWhat is included

This figure is a conceptual summary of the article's content

Learn more about Adipose-Derived Stem Cell Therapy

References

Supervising Physician

Director, Medical Corporation Shimada Clinic
Head of Clinical Practice, Grand Green Osaka Umekita Clinic

Hidenori Shimada

Graduated from the University of Tokushima Faculty of Medicine in 2005. After his initial residency, he obtained U.S. medical certification (ECFMG) and trained as a sub-intern in general surgery at the University of Washington. After completing the doctoral program at Kyoto University Graduate School of Medicine and working as a researcher at the Center for iPS Cell Research and Application (CiRA), Kyoto University, he founded Shimada Clinic in 2013. At Grand Green Osaka Umekita Clinic (https://umekitaclinic.org), he is engaged in a wide range of care, from internal medicine and pediatrics to cell therapy and aesthetic medicine.

* The physician supervision of this article covers its academic content only and does not constitute a recommendation of any specific treatment or product.

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