HELLO, I AM DR. SANDRA!
From this part of my site, you can learn about my background and training. Having to go through severe health issues after graduating from medical school, I experienced and learned many things that helped me towards understanding the bigger picture related to health and life in general. Now I am sharing and using everything I learned to help others.
My Journey: How Cancer Transformed My Approach to Healing
I want to share with you a deeply personal part of my life that led me to embrace Health Coaching, Holistic Medicine, and Microbiome studies. I started my career as a conventional medical doctor, graduating from the University El Bosque in Bogotá, Colombia. Like many doctors, I believed that my knowledge and training were enough to keep me healthy. I exercised regularly, ate what I thought were healthy foods, and followed traditional medical practices.
But in December 2006, my life took a drastic turn. I was diagnosed with stage three cancer of my left vocal cord—a diagnosis that shocked me to my core. How could this happen? I didn’t smoke, I was a doctor, and I thought I was doing everything right.
I began treatment at Memorial Sloan Kettering Hospital in New York, undergoing months of chemotherapy and 37 sessions of radiotherapy. While the traditional treatment was necessary, I couldn’t help but feel there had to be more to healing. As I progressed through the treatment, I began researching the relationship between nutrition and cancer. I started making immediate changes—switching to organic foods, eliminating artificial drinks and sweeteners, and focusing on a more natural lifestyle.
At the same time, I leaned heavily on my faith. During this challenging period, my connection with God deepened, and after months of treatment, I experienced what I believe was a divine healing. God’s word came to me: “May you go in peace, your faith has healed you.” Miraculously, shortly after, my treatment was suspended for medical reasons, a confirmation of the healing I had received.
This profound experience inspired me to dive deeper into understanding how lifestyle choices, nutrition, and spiritual well-being are intricately connected to health. I pursued my certification as a Health Coach from the Institute for Integrative Nutrition in Manhattan, New York, followed by additional training in Cancer and Nutrition from the University of Arizona’s Integrative Medicine Faculty. I also became a Certified Health Educator at the world-renowned Hippocrates Health Institute in West Palm Beach, Florida, where I now work.
Today, I am cancer-free and in excellent health. But more than that, I have gained invaluable knowledge that has transformed my approach to healing. My personal experience with cancer showed me that true healing must encompass the physical, emotional, energetic, mental, and spiritual aspects of our being. Traditional Western medicine often focuses only on the physical body, but I’ve learned that to truly heal and achieve optimal health, we must treat all dimensions of ourselves. This is the foundation of my practice in Holistic Medicine.
Let’s Transform Your Health Together
I am deeply passionate about helping others reach optimal health through natural, holistic methods. Whether you’re looking to prevent illness, support your body during or after cancer treatment, or simply want to live a more balanced, vibrant life, I am here to guide you.
If you’re open to exploring alternative methods beyond conventional medicine, it would be my honor to support your journey. Together, we’ll address every aspect of your health—physical, emotional, and spiritual—to unlock the power of true healing.
Take the First Step Toward Lasting Health
Your body has the innate power to heal. I’ve lived it, and I’ve helped countless others discover it too. Let’s work together to create a personalized wellness plan that nurtures every part of you. Whether you’re seeking preventive care or alternative approaches to illness, I’m here to help you reclaim your health and live your best life.
This version highlights your personal experience and professional expertise, inviting potential clients to trust in your holistic approach and take action toward their own healing journey.
My Approach
My personal journey has shown me that true health and wellness go far beyond what I was taught in traditional medicine. As a doctor, I learned how to treat symptoms with medication or surgery, but I was never encouraged to explore the root causes of illness. Today, I understand that when the body shows signs of imbalance, it’s because there’s an underlying deficiency, inflammation, or imbalance affecting the immune system.
So, what triggers this inflammatory process? The answer is simple: everything that causes stress and imbalances in our body and hormones, from pesticide-contaminated foods, saturated fats, sugars, to toxic relationships, alcohol, tobacco, drugs, and environmental factors. Maintaining balance is essential for our body to function optimally.
Well-being is not just about the physical body; it also involves our mind and spirit. I strongly believe that spiritual health is crucial. Realizing that we are part of a divine creation shifts our perspective on life and reminds us that we must care for our physical, emotional, energetic, mental, and spiritual selves.
In my practice, I work holistically, assessing how every area of your life is interconnected. My goal is to educate you so that you can embrace a lifestyle that makes you feel truly healthy and happy.
Together, we will achieve your health goals. I will guide you at every step, helping you make the best decisions about nutrition and lifestyle, personalized to fit your unique biology.
Here are some key principles we will work on together:
Bio-individuality: Every person is unique. We will create personalized changes that fit your needs, preferences, and lifestyle.
Primary Nutrition: True health is not only about what you eat. It also includes fulfilling relationships, a career that excites you, regular physical activity, and most importantly, a deep connection with your spiritual self. All of these are essential for a balanced and healthy life.
I am here to help you build a life that is more fulfilling, healthier, and filled with purpose. Let’s transform your health together.
My Training and Expertise
My journey in medicine began with a traditional foundation: I earned my medical degree from the prestigious University El Bosque in Bogotá, Colombia. However, after personally overcoming stage three cancer in 2007, my path took a transformative turn. This life-changing experience ignited a deep passion for holistic healing and redefined my career, leading me to embrace a more integrative approach to health.
To expand my knowledge and expertise, I trained at the Institute for Integrative Nutrition in Manhattan, New York, where I became certified as a Holistic Health Coach. There, I studied over 100 dietary theories, practical lifestyle solutions, and innovative coaching methods under the guidance of world-renowned experts in nutrition and wellness.
Some of my mentors include luminaries such as Dr. Andrew Weil, Director of Integrative Medicine at the University of Arizona; Dr. Deepak Chopra, a pioneer in Mind-Body Medicine; Dr. David Katz, Director of the Yale Prevention Research Center; and Dr. Walter Willett, Chair of Nutrition at Harvard University. Additionally, I had the privilege of learning from Geneen Roth, an authority on emotional eating, and Dr. Joel Fuhrman, a leader in disease prevention and reversal through natural approaches.
Furthering my dedication to holistic health, I pursued certification as a Health Educator from the world-renowned Hippocrates Health Institute in West Palm Beach, Florida, where I now proudly contribute as part of their team.
My training doesn’t stop there. I hold a Certification in Microbiota and Health from the Escuela de Salud Integrativa in Spain and am certified in A Course in Miracles Psychotherapy, adding layers of depth to my understanding of how emotional and spiritual wellness play critical roles in healing.
Currently, I am expanding my expertise in Environmental Health through the Academy of Integrative Medicine at the University of Arizona.
What Sets My Practice Apart:
My extensive background in holistic nutrition, integrative medicine, and preventive health has equipped me with the tools and knowledge to empower my clients to make transformative, long-lasting changes in their lives. My approach is grounded in the belief that true healing comes from treating not just the physical body, but also the emotional, mental, energetic, and spiritual bodies. Unlike conventional medicine, which often focuses only on symptoms, my practice is designed to address the root causes of illness by supporting the whole person.
If you’re ready to embark on a journey toward lasting wellness, whether you’re seeking to balance your microbiome, prevent cancer recurrence, or achieve holistic well-being, I’m here to guide you every step of the way.
Let’s Transform Your Health Together
Reach out today to schedule a consultation and take the first step toward a healthier, more vibrant life. Holistic healing is within your reach, and I’m here to help you discover it.

"I was diagnosed with triple-negative breast cancer, stage 2b, in April 2023. They recommended chemotherapy and immunotherapy simultaneously. A friend of my mother's, who was also a patient of Dr. Sandra’s, referred me to her. Sandra’s deep knowledge and wisdom about the microbiome and internal balance were crucial for me in detoxifying from chemotherapy and regenerating my health and internal balance afterward. Her guidance helped me navigate through the vast information available and focus on what was most impactful for my healing.
Sandra's support also strengthened my connection on an energetic and spiritual level through meditations, prayers, mantras, and chants. She guided me to connect with myself in profound ways. Considering chemotherapy was the hardest thing I’ve ever done; those meditations and mantras and singings provided me with strength and a deeper connection to myself during the most challenging time of my life.
I share this because if there are others going through a similar journey, they should know about these complementary approaches to help them heal and navigate such a tough treatment. More than anything, it’s about finding oneself, recovering, and healing."
Ariana Moore, Texas. USA

“I'm Jason from Massachusetts, USA. Dr. Sandra literally saved my vacation, I had food poisoning and lost consciousness at breakfast, Dr. Sandra was at the next table, she realized what was happening, she came immediately; She gave me electrolytes. Colloidal silver, activated charcoal, he gave me the schedule to take all this in 8 hours, I was feeling much better, here I am 24 hours later and I feel very good, I was able to eat again and I feel full of vitality, Sandra literally saved my vacation “Thank you Sandra.”
Jason. Massachussets, USA

“Hello, I want to share my testimony, which was wonderful, with Dr. Sandra Rangel. I did my treatment approximately 4 years ago, at that time I managed to lose 8 kilos, kilos that I had not been able to lose since I had my daughters. Apart from losing weight, I achieved other very positive things in my life, among them was that I managed to gain a lot of energy. We did the treatment with supplements, food, readings and more. All this helped me a lot to learn to eat better, better lifestyle and to be able to apply it also at home with my husband and my daughters. At this moment I have managed to maintain the weight that I managed to lose at that time and it has been wonderful, thank you!”.
Maria Cecilia Puente, Colombia. (Overweight and optimum health)

“This is not only a thank you, but also a congratulations and a life testimony for Dr. Sandra Rangel. Her coach has truly been wonderful. I have confirmed this over the years. It has been a blessing in my life to have found her, because I was able to change many habits that I had and that has contributed to improving my health, improving ailments that I have had, and above all, to becoming aware of what is best for my body and mind and also for my family. I truly invite you to get to know her entire protocol. I have tried other doctors and I always, always conclude that Dr. Sandra is extremely comprehensive, so I have no choice but to congratulate her, thank her, invite you and give you my testimony that her entire methodology truly transformed my life.”
Jenny Amaya. Miami, USA. (Overweight and optimum health)
Hello, my name is Derly Olarte, I live in Dubai and today I want to share my testimony about the process I have experienced with Dr. Sandra Rangel. Thanks to all her knowledge and light, she has been a great guide on my path that has allowed me to learn and make changes in different aspects in favor of a much healthier and quality life.
Thanks to her, my healing process has been wonderful, full of growth and learning; of being more conscious and understanding the way to feed my physical and spiritual body. Thanks to her, I WOKE UP and understood the damage that sweets and flour cause to my body, and that there is a way to eat delicious and nutritious food based on organic ingredients, gluten-free, without added sugars and without genetic modifications.
I made many changes to my habits, and I can not live without them anymore.
These habits strengthened different systems of my body such as the immune system, the nervous system, the digestive system, etc. They changed the texture of my skin, my hair, and I experienced the difference between a vital, light and energetic body; to a heavy body, low on energy and full of toxicity.
Today I thank life for Sandra, for being part of my path, for sharing each of her knowledge with me, for helping me in this stage of healing, for all the love she transmits, and for all the benefits that are reflected in me thanks to this holistic work.
Thank you Sandra for all your love and all your energy, may there be many more people who have the opportunity to heal by your side.
Derly Olarte Camargo, Dubai.

“Thank you for placing Dr. Sandra Rangel in my life; she has taken such good care of me. With Your help, she has worked with me through the good times and the not-so-good times because sometimes I have felt sad, but Dr. Sandra, with the words God puts in her mind, has never let me fall. Here I am, still in God’s hands, with Dr. Sandra’s treatment. I had no strength left; the pain was too much, which is why I say that God placed this doctor in my life.”
Socorro was diagnosed with stage four cancer with multiple metastases when she first came to my consultation. After going through chemotherapy and other treatments, she was tired of battling cancer and wanted a different approach, which led her to seek my help. During our treatment, her cancer stopped progressing, she changed her lifestyle, lost excess weight, regained hope and purpose, and even started her own organic garden!
Socorro lives in Texas, and it has been seven years since I first met her.
Socorro Castro,Texas, USA
"Since 2015, I was diagnosed with an anxiety disorder, initially mixed with depression, and later with 'Burnout Syndrome' (professional burnout, emotional exhaustion, burnout syndrome, work fatigue).
For several years, I sought various medical and therapeutic treatments for this condition, which greatly affects my daily life. I found Dr. Sandra, and her holistic approach has helped me tremendously." Rosa Robles, Colombia.
In early June 2018, I was diagnosed with cancer in my right breast. Unaware of the toxic effects of conventional treatments, I underwent a mastectomy, chemotherapy, and radiotherapy. It was then that I met Dr. Sandra Rangel, who introduced me to natural health methods and products to help mitigate the side effects of my treatment. With her expertise, Dr. Sandra formulated health supplements and personalized dietary changes to reduce the adverse effects of conventional chemotherapy.
Unlike many other patients I met during chemotherapy, my side effects were less severe, thanks to the supplements I was taking and the strict diet changes I followed diligently. Today, my medical check-ups show no signs of malignant cell reproduction.
I am deeply grateful to Dr. Sandra Rangel for her invaluable guidance and to God for orchestrating everything for my healing journey.
Lilia Espinoza, Colombia.
“At 36 years old, at the end of 2022, I was diagnosed with kidney cancer and the first thing I did was think of Dr. Sandra.
I met Sandra a few years ago in Miami, since we were working together, and she was the first person I thought of, so I looked her up immediately.
The program that Sandra offers is impressive, it made me see on a physical level what was happening, on an emotional level I thought everything was resolved and I realized that it wasn’t, on a mental and energetic level we also worked.
Something that I remember a lot in the first appointment that brought me a lot of calm was when Sandra told me not to ask why? Ask yourself why is this happening? What is the learning that you have to take from here?
At this moment I am completely healthy and during the treatment with Sandra I became pregnant, which was a longing in my heart and I had been looking for it to happen for a long time. I experienced many Miracles in the treatment and I am so grateful, the program I did with Sandra transformed me and my family and everyone around me.
This program was vital in all areas of my life. I honestly don't know what I would have done without Sandra."
Andrea Castellanos. Venezuela.
Pablo was diagnosed with pancreatic cancer in October 2021 and is completely healthy. “Dr. Sandra deserves all the credit here; she was a great support for us. I was very fortunate to have the support of Dr. Sandra who, with dietary changes, lifestyle changes, supplements, meditations and more helped my healing, I bless the Lord and I am very grateful to Dr. Sandra and also another person who has been a blessing and an impressive support is my wife, Tatiana.”
Tatiana: “It has been an adventure, the first person I called was a friend who went through cancer and she recommended that the first thing I had to do was to call to Dr. Sandra. That's what we did and we started to change many things, foods, kitchen utensils, lifestyle, supplements; Dr. Sandra was essential, instead of wasting time with other things or people, Sandra has all the knowledge and experience you need to recover from cancer. I received a new husband who is not only healthy but also a new human being.”
Pablo Espinel, Palm Beach, USA