Hello, I am Dr. Hidenori Shimada of Grand Green Osaka Umekita Clinic in Osaka, Japan.
NK cell therapy is a form of immunotherapy that utilizes the body’s own Natural Killer (NK) cells to help fight diseases like cancer. As you prepare for this treatment, you may wonder what you can do to support your body and overall well-being. While the therapy itself is the primary intervention, certain lifestyle adjustments before and after your infusion may play a supportive role in your journey. This article offers general wellness tips to consider, always in consultation with your physician.
Why Your Lifestyle Matters in Your Immunotherapy Journey
Your overall health can influence how you experience medical treatments. A balanced lifestyle—encompassing nutrition, exercise, and stress management—aims to maintain your body’s resilience. The goal is not to guarantee a specific outcome but to help you feel as well as possible throughout the treatment process. Research suggests that factors like diet, physical activity, and stress can modulate immune function. By focusing on these areas, you can take a proactive role in supporting your general health, which is a positive step during any medical care, including immunotherapy.
Nutritional Support: Eating to Nourish Your Body
A well-balanced diet is fundamental to good health. Rather than focusing on specific “superfoods,” aim for a varied and nutrient-rich eating pattern. Here are some general guidelines to discuss with your doctor or a registered dietitian:
- Focus on Whole Foods: Prioritize fruits, vegetables, lean proteins, and whole grains. These foods provide essential vitamins, minerals, and antioxidants that support overall bodily functions.
- Stay Hydrated: Drinking plenty of water is crucial, especially around your treatment days. Proper hydration helps your body function optimally.
- Listen to Your Body: Treatment can sometimes affect appetite or digestion. Eat smaller, more frequent meals if that feels better than three large ones. Choose foods that are gentle on your stomach.
- Consult a Professional: It is essential to consult your physician before making significant dietary changes or taking new supplements, as some may interact with your treatment.
Gentle Exercise: Movement Before and After Cell Therapy
Physical activity can be beneficial for both physical and mental health, but the key is to choose an appropriate level of intensity. The goal is not to push your limits but to engage in gentle, consistent movement.
Before Treatment: If you are already active, you may be able to continue your routine after checking with your doctor. If you are not, consider starting with light activities like daily walks, stretching, or yoga.
After Treatment: Your body will need time to rest. Listen to its signals. Fatigue is a possible side effect, so it’s important not to overexert yourself. Short, gentle walks can help with circulation and mood. Always get your doctor’s approval before resuming or starting any exercise program after your cell therapy infusion.
Managing Stress and Prioritizing Rest
A medical diagnosis and treatment can be a significant source of stress, and chronic stress is known to impact the immune system. Managing your mental and emotional well-being is an integral part of your wellness plan.
- Prioritize Sleep: Aim for 7-9 hours of quality sleep per night. A consistent sleep schedule helps regulate many bodily processes, including immune function.
- Practice Relaxation Techniques: Activities like meditation, deep breathing exercises, or mindfulness can help manage anxiety and improve your sense of calm.
- Seek Support: Connect with friends, family, or a support group. Talking about your feelings can be a powerful way to alleviate stress.
Preparing for Treatment at Grand Green Osaka Umekita Clinic
At Grand Green Osaka Umekita Clinic, we believe in a comprehensive approach to care. NK cell therapy is provided as a non-insured (private) medical treatment under Japan’s Act on the Safety of Regenerative Medicine. The decision to proceed with this therapy is made only after a thorough consultation with a physician to determine if you are a suitable candidate.
We encourage you to discuss any lifestyle changes you are considering with our medical team. We can provide guidance tailored to your specific health condition. For detailed information about the treatment process, potential risks, side effects, and costs, please review our official NK Cell Therapy page and schedule a consultation.
Learn more about NK Cell Therapy at our clinic.
Summary: A Proactive Approach to Your Wellness
Preparing for NK cell therapy involves more than just the medical procedure. By adopting a balanced lifestyle with mindful nutrition, gentle exercise, and stress management, you can create a supportive foundation for your body and mind. These efforts are part of a holistic approach to your health. Remember, every step you take on this journey should be guided by professional medical advice. If you are considering treatment in Osaka, Japan, our team at Grand Green Osaka Umekita Clinic is here to answer your questions.
- Balanced NutritionFocus on whole foods and hydration
- Gentle ExerciseLight activities like walking
- Stress & Rest ManagementPrioritize sleep and relaxation
- Consult Your DoctorAlways discuss lifestyle changes
This diagram is a conceptual summary of the article's content
References
- PubMed: Induced pluripotent stem-cell-derived CD19-directed chimeric antigen receptor natural killer cells in B-cell lymphoma: a phase 1, first-in-human trial. (2025)
- PubMed: Advances in immunotherapy for pediatric acute myeloid leukemia. (2018)
- PubMed: A phase I, single-arm, open-label, dose-escalation, multicenter study of SAR445419, an off-the-shelf, ex vivo expanded allogeneic natural killer cell product, in participants with relapsed or refractory acute myeloid leukemia. (2026)
- PubMed: The role and novel use of natural killer cells in graft-versus-leukemia reactions after allogeneic transplantation. (2024)
- PMC: Immunosenescence, Physical Exercise, and their Implications in Tumor Immunity and Immunotherapy. (2025)
- PMC: Immunosurveillance of Cancer and Viral Infections with Regard to Alterations of Human NK Cells Originating from Lifestyle and Aging. (2021)
- PMC: Examining the effect of intermittent cycling throughout a 3-h period on peripheral blood concentrations of haemopoietic stem and progenitor cells and cytolytic natural killer cells. (2025)
- PMC: Integrated mechanisms and clinical relevance of exercise driven remodeling of the tumor immune microenvironment. (2026)
- MHLW (Japan): Regenerative Medicine — Ministry of Health, Labour and Welfare, Japan
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.