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Planning Adipose Stem Cell Therapy in Japan: A Guide to Visits and Stay Duration

Published 2026.09.27 7 min read

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

Regenerative medicine in Japan is attracting global attention, and adipose-derived stem cell therapy is a key area of interest for many international patients. If you are considering this treatment, one of the most practical questions is: how much time do I need to spend in Japan? Understanding the logistics, including the number of visits and the duration of each stay, is essential for planning. This article provides a clear overview of the typical timeline for adipose-derived stem cell therapy to help you prepare for your medical journey.

The Adipose Stem Cell Therapy Process: A Two-Visit Journey

For most international patients, adipose-derived stem cell therapy involves two separate trips to Japan. This is because the process is divided into three distinct stages: cell collection, cell culturing, and cell administration. While the entire timeline from start to finish can span several weeks, your physical presence in Japan is only required for the first and third stages. The second stage, cell culturing, takes place in a specialized laboratory while you can be back in your home country.

Visit 1: Initial Consultation and Fat Tissue Collection
Interim Period (at home): Cell Processing and Culturing
Visit 2: Administration of Cultured Stem Cells

Your First Visit: Consultation and Fat Collection

The first trip is a critical starting point for your treatment. This visit is dedicated to a comprehensive medical consultation and the collection of your fat tissue.

During the consultation, a physician will review your medical history, discuss your health concerns, and conduct necessary examinations to determine if you are a suitable candidate for the therapy. This is your opportunity to ask questions and understand the potential outcomes and limitations of the treatment. It is important to remember that eligibility is based on a professional medical assessment.

If you proceed, the next step is the fat collection. This is a minor, minimally invasive procedure performed on an outpatient basis under local anesthesia. A very small amount of subcutaneous fat, typically from the abdomen or thigh, is harvested through a small incision. The procedure itself is relatively quick.

Recommended Stay Duration: For this first visit, it is generally advisable to plan a stay of approximately 3 to 7 days. This allows sufficient time for the initial consultation, pre-procedure checks, the collection procedure itself, and a short period for recovery and follow-up before you travel back home.

The Interim Period: Cell Culturing in Japan

After your fat tissue is collected, you can return to your home country. The collected sample is sent to a specialized cell processing facility in Japan. There, mesenchymal stem cells (MSCs) are isolated from the fat tissue, then cultured and expanded in number over several weeks under strictly controlled conditions. This process is designed to generate a sufficient quantity of high-quality cells for your treatment.

In Japan, regenerative medicine is regulated under the Act on the Safety of Regenerative Medicine. This means that treatments like the one offered at Grand Green Osaka Umekita Clinic are provided based on a treatment plan submitted to and accepted by the Ministry of Health, Labour and Welfare. The cell culturing process adheres to these stringent national standards for safety and quality management.

Your Second Visit: Stem Cell Administration

Once your cells have been successfully cultured and are ready for administration, you will plan your second trip to Japan. This visit is for the core part of the treatment: returning the expanded stem cells to your body.

The administration is typically done via an intravenous (IV) infusion. This is also an outpatient procedure that usually takes about one to two hours. During the infusion, you can relax comfortably at the clinic. After the procedure, there will be a short observation period to monitor your condition before you are cleared to leave.

Recommended Stay Duration: Similar to the first trip, a stay of 3 to 7 days is often recommended for the second visit. This provides a buffer for the pre-infusion check-up, the administration itself, and any post-treatment consultations your physician may advise before you fly home.

Key Considerations for Your Medical Trip

Planning a medical trip requires careful thought. Here are some crucial points to consider:

Personalized Schedule: The timeline described here is a general guide. The exact schedule, number of cell administrations, and overall treatment plan will be personalized for you based on your health condition and the physician’s assessment.
Private Medical Care: Adipose-derived stem cell therapy is provided as private medical care (自由診療) and is not covered by Japanese public health insurance. It is essential to have a thorough discussion with the clinic about all associated costs, potential risks, and side effects before making a decision.
No Guarantees of Efficacy: While research into the potential of stem cells is advancing worldwide, this therapy does not guarantee a cure or specific outcome for any condition. Its purpose is to support the body’s natural repair mechanisms. It should not be considered a replacement for standard medical treatments for diseases.
Communication: Ensure the clinic can communicate with you effectively in your language. At Grand Green Osaka Umekita Clinic, we strive to provide clear information to our international patients.

Begin Your Consultation Journey in Osaka

Understanding the logistical requirements is the first step toward making an informed decision about regenerative medicine. The process for adipose-derived stem cell therapy is structured to be as convenient as possible for international travelers, with two manageable trips to Japan.

If you are exploring treatment options in Japan, Grand Green Osaka Umekita Clinic, located in the Umeda area of Osaka, provides consultations on adipose-derived stem cell therapy. To learn more about the treatment flow, features, and how to get in touch with us, we invite you to review our detailed information page.

For more details, please visit the Adipose-Derived Stem Cell Therapy page.

Adipose Stem Cell Therapy Flow

1Visit 1: Fat CollectionConsultation & collection (3-7 days)
2Interim: Cell CulturingReturn home while cells are cultured
3Visit 2: Cell AdministrationReturn for IV infusion (3-7 days)

This diagram provides a general overview of the treatment process

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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