What You Gain with Zenith Within and Why I Built It

That’s the purpose of this newsletter.

Because I’ve been there.

👩‍⚕️ Get the exact protocols not just to live longer, but better, with implementation steps, printable guides and mouth-watering recipes from a Medical Doctor with a Master of Science in Nutrition—no prescriptions required (sorry Big Pharma).

💪 Cut through information overload and stop wasting time on conflicting advice. Get evidence-based insights and myth-busting clarity to achieve the well-being you’ve always desired—for you and your loved ones.

🤩 Do you need practical science-based tips, answers to your FAQs, and myth-busting insights to help you and your loved ones thrive and achieve your greatest well-being?

Why I Built Zenith Within

At Zenith Within, we believe that true wellness comes from within—reaching your own zenith, the highest and best version of yourself.

As a doctor, patient, and family member, I have witnessed firsthand the importance of integrative and preventive medicine.

My mother was diagnosed with lung cancer. She underwent chemotherapy, but unfortunately, it was ineffective. She passed away two years later, while I was studying medicine.

Shortly after, I came across the case of a doctor who had been diagnosed with metastatic ovarian cancer—her prognosis was similar to my mother’s. In addition to her oncology treatment, she explored integrative medicine, incorporating exercise, nutrition, psychology, and other complementary therapies. Not only did she recover, but she was even able to have children afterward.

This made me question everything. Why did the healthcare system not offer my mother these options?

I, too, struggled after everything that happened, facing depression, insomnia and anxiety with little to no support. The only solution I was offered was a pill.

This is why I advocate for integrative medicine, which goes beyond traditional treatments. It considers the whole person—nutrition, exercise, mental and emotional health, sleep, stress management, gut health, and more—because everything is interconnected and plays a role in our well-being.

Conventional medicine primarily focuses on curing disease (or attempting to), rather than preventing it. But as the saying goes, “prevention is better than cure.“

These experiences shaped my approach to medicine and inspired me to share what I’ve learned over a decade, and keep learning.

What Some People Say

“I support this publication by Dr Sara Redondo as she offers holistic health advice with nuances which we cannot find from online resources. Dr Redondo is also a caring medical doctor who understand patient pain points and empower them with accurate information. I am grateful to be part of her vibrant community.” — Dr. Mehmet Yildiz

“Dr. Sara Redondo offers grounded, evidence-based health guidance that’s both clear and compassionate. With her holistic approach and medical knowledge, she delivers science-backed insights you can trust. What sets her apart is her warmth—a deeply caring presence that reminds us our well-being is as much about heart as it is about science. Her work is a breath of fresh air in and beyond the medical world.” — Dr. Bronce Rice

“Dr. Sara Redondo is a wonderful advocate for health and well-being. Her commitment to excellence and her proactive approach to wellness make her a standout in her profession.” — Dr. Jimi Francis

“Dr. Redondo shares her insightful, relevant and practical medical knowledge across a broad range of wellness and health related topics. Based upon her professional background as a trained medical doctor paired with her personal experiences, she shares her perspective learned from inside--and outside-the healthcare system. Her work covers "traditional", holistic, science-backed medical & healthcare topics as well as mental health.” — Dr Christine DiBlasio

“Sara is a Medical Doctor whose goal is to help her readers improve their health with science-backed advice. Through her newsletter she provides holistic and practical health strategies to help you take control of your own health.” — Dr Dominic Farsi, PhD RNutr

“Sara is the kind of doctor everyone needs and deserves—relatable, human, and with an integrative, preventive approach to health. What I love about her Substack is how she cuts through the noise of information overload with evidence-based insights and misconception-shattering advice. Follow her for practical, science-backed tips and myth-busting insights that make health feel approachable and actionable!” — Karina Baloleanu, CFNC

“Dr. Sara Redondo exemplifies all the best in holistic healing. She is empathic, competent and without hesitation tends to the needs of those seeking her help. Her keen sense of collaboration is another extreme value in working with colleagues to better our health services.” — Dr. Kenneth Silvestri

“Sara's perspective as a physician is unique and welcome. Not many take such a nuanced and integrative approach. I have really enjoyed how open she is to the nuances of challenging topics as well!” — Vanessa Scaringi, PhD

“Dr. Sara is courageous in a time where that is desperately needed! She stepped back from our sick system of "healthcare" to engage in true integrative and holistic healing. She offers a true path to wellness, not party tricks or simple pills.” — Linnea Butler, MS, LMFT

“Dr. Sara Redondo’s posts about health and wellness issues are clear, concise, and very informative. She bases her posts not just on standard practice, but also on the research. I have a lot of respect for her integrity and her commitment to empower others, something close to my heart. Thank you, Sara, for the work you do!” — Pamela Cotton, Ph.D

“It is so refreshing to see that a Medical Doctor is looking at health in a more holistic way and providing the scientific back up to it. There is a world where holistic medicine and conventional medicine can co-exist and help you achieve the best health outcomes for you.” — Danni Macfarland, holistic nutritionist

“Thrilled to have found Dr. Sara Redondo here on Substack and have enjoyed reading her evidence-based advice on holistic care and adopting healthy behaviors. I'd highly recommend you add her insightful newsletter to your wellness reading list!” — David Dansereau, MSPT

“If you want to empower yourself with holistic health strategies from a Medical Doctor, Sara is the PERFECT person to learn from. She helps you through information overload with evidence-based insights and misconception-shattering advice to achieve the well-being you've always desired for you and your loved ones. Highly recommend!” — Naomi Murray, RHN, NNCP

“Dr. Sara Redondo combines medical expertise with genuine compassion, bridging evidence-based medicine and holistic wellness. Her scientifically grounded guidance, delivered with exceptional warmth, demonstrates that rigorous knowledge and heartfelt care create truly transformative health outcomes. Be sure to check out her newsletter for ongoing insights.” — Sophie Guénon, MS

“I believe in the information Dr. Redondo provides. It's information we all need as we take care of our health and age well.” — Dr. Janice Walton

“Dr. Sara guides you toward your highest and best self. Her newsletter blends holistic, practical, and science-based health guidance to support true wellness from within. As a medical doctor and advocate for integrative medicine, Dr. Sara addresses the whole person—nutrition, exercise, sleep, stress, emotional health, gut health, and more—because everything is interconnected and essential to your well-being.” — Pam Fullenweider, MS, RD, LD

“You know how rare it is to find a physician who truly gets it? Someone who understands that real health happens at the intersection of evidence and empathy, of science and systems thinking? Meet Dr. Sara Redondo. I've been following Sara's work at Zenith Within, and what strikes me most is her ability to translate complex medical concepts into actionable wisdom without dumbing it down or falling into the wellness-industrial-complex trap of promising miracles.” — Daniel Stickler MD

“Practical, science-based guidance to help patients take control of their health.” — Daniel Flora, MD, PharmD

“If you want health information incorporating integrative medicine that’s real and reliable, check out Zenith Within by Dr. Sara Redondo. She blends medical insight with holistic ideas in a way that’s clear, compassionate, and backed by science. Consistent, thoughtful posting and always with practical consideration and tips you can use in your life.” — Christian Pean MD, MS

“Excellent advice on functional medicine and healthy lifestyle.” — Jade Teta, Author, Naturopathic Doctor, Ph.D. Psychology

“A dedicated work and skillful writing that empowers people with preventive and compassionate health care.“ — Patti Wohlin, Certified Functional Health Coach

“Dr. Sara Redondo brings honesty, clarity, and care to a space that’s often overwhelming. She weaves science and self-awareness into something you can actually use. You don’t have to figure it out alone.” — Cara Bradley, Certified Wellness Coach

“Dr. Redondo is an MD sharing holistic, science-backed strategies to optimize your health!” — Sophia Deahl, MS, RDN

“Sara is a medical doctor with a holistic, practical, and science-based approach to health. The information she provides is game changing for anyone looking to start their health journey or for those that want to geek out over interesting subjects. I'm not one for subscribing to many writers but this one was a no-brainer for me. Love reading her articles.” — Rael Todd, Personal Trainer

“In such an important time to be able to separate medical facts from fiction, I highly recommend Zenith Within from Sara Redondo, MD. Her writings and live interviews will help your mind, body, and spirit.” — Dove Wilson, LCPC, BCN, psychotherapist, coach, sleep specialist

“Profoundly intelligent and practical information about optimizing your health.” —Roman Gelperin, Bestselling Author & Certified Life Coach

“The wonderful Dr. Sara Redondo has such an intuitive and inspiring approach to health and wellbeing. Apart from having the credentials to back up her views, she also has a thoroughly engaging way of conveying what we need to know.” — Peter Mukherjee

“Sara Redondo is your go-to resource for integrative and preventive health strategies that will help you cut through information overload. Offering practical and evidence-based insights, Sara is on a mission to help you and your loved ones achieve the well-being you've always desired.” — Tracy Mansolillo

“Zenith Within has been such a meaningful source of inspiration for my own wellness journey, and has deeply influenced the way I shape my classes and connect with others. I am thankful to Sara Redondo, for creating such a thoughtful, encouraging space! Highly recommended!” — Jane Turner

“If you’re looking for a Substack that combines heartfelt wisdom with practical health advice, Sara’s Zenith Within is a must-read. Her sweet and insightful approach to total health and wellness offers a refreshing perspective you’ll want to revisit again and again.” — Jo Taylor

“Zenith Within by Sara Redondo, MD is a standout newsletter that blends science-backed insights with holistic, practical approaches to healthcare. Thoughtful, grounded, and genuinely worth your time.” — Nicolas Hubacz

“For every one craving clarity in a sea of conflicting health advice, Dr. Sara Redondo is a trusted guide. Her Substack, Zenith Within, blends science-backed wisdom with deep compassion, like having a doctor who actually listens and gets it. This isn’t just about wellness; it’s about coming home to your body, your power, and your wholeness.” — Magdalena Ponurska

“Bereaved people need trusted information to support their physical, emotional and spiritual health. I love Sara's approach to wellness and recommend you review her Substack for evidence-based knowledge, tips, and support.” — Dina Bell-Laroche

“Sara brings a fresh, empowering take on wellness—blending her medical knowledge with real-life wisdom to help you feel your best, inside and out. Through inspiring stories, science-backed tips, and a unique approach to health, Sara makes taking care of yourself feel so easy!” — Laura Arteaga

“Dr. Sara's approach to holistic health is transformative. What sets their guidance apart is the rare combination of medical expertise and holistic understanding that cuts through the overwhelming sea of health information we face daily. I was struggling with conflicting advice from various sources until I discovered her evidence-based strategies.” — Obi

“Thanks for being here. We need more integrative medical approach…I believe in looking at the whole person/body as everything is connected. Subscribed. And looking forward to read your input.” — Claudia Brose

“Sara blends her science-backed POV as a medical doctor with her passion for holistic, practical, evidence-based care. Her writing is the best of all worlds.” — Liz Baker Plosser

“Dr. Sara Redondo is a very dedicated and passionate medical doctor who truly values her readers and clients by providing holistic, practical, and science-based facts/advice for the main purpose of offering the right solutions.” — Astrid Sadaya

“Glad you are here Sara. As a former nurse you are a breath of fresh air. I look forward to hearing your thoughts and ideas.” — Eva

“Sara shares great work to help people heal from the core. Check out Sara’s work, it’s life-changing.” — Robin Motzer

“Smart and actionable health advice that feeds into overall well-being. Truth shared in a lovely way.” — Lisa Di Capua

“Clear, concise, inspiring and useful information written in an easily accessible way.” — Jane Duncan Rogers

“Thank you Sara for helping us heal on every level. We need you!” — Jeanette Martin

“I absolutely love the information you share. So glad I came across you and your work.” — Jennifer Louise

“I’ve followed Sara’s journey from the very beginning, and it’s been such a joy. Every post she shares is packed with insight and value, and I always come away having learned something new. Her writing feels like a conversation with a wise friend—grounded, honest, and full of heart.” — Fliss Makes

“This is something we all need. Subscribed!” — Patty Bee

“Zenith Within is like green juice for your soul—with a shot of espresso-level smarts. Dr. Sara keeps it real, wise, and woo in all the right ways. If you want grounded health advice without the fluff, she’s your girl. Total subscribe-worthy.” — Marni Battista

“I’m already subscribed! Glad that I am!” — Julie Neches

What I Share Inside Zenith Within

I break down real, science-backed health strategies—no myths, no misinformation.

You’ll be able to improve your wellness from every angle, with all information rooted in the most solid and recent scientific evidence, ensuring you progress safely at every stage of your journey toward lasting and complete health.

With the overwhelming amount of information we’re exposed to, this newsletter filters the essentials—no noise, no complications—so you can make informed decisions and achieve your health goals confidently and effectively, knowing that you're receiving reliable and up-to-date information.

You’ll get:

👩‍⚕️ The exact protocols, not just to live longer, but better, with implementation steps and printable guides through daily posts, from a Medical Doctor with a Master of Science in Nutrition and over a decade of knowledge in Integrative Medicine.

💪 Practical health tips: From Monday to Friday, you’ll get practical ways to boost your energy, improve your mood, and enhance your overall well-being.

🤤 Mouth-watering recipes every Sunday so that you can improve you health while enjoying the process.

🤩 Myth-busting clarity: Say goodbye to misinformation. I’ll help you separate fact from fiction so you can make truly informed decisions.

🗞 Reliable, up-to-date information: Stay ahead with the latest medical insights, helping you make confident choices for your health.

📩 Practical guides, eBooks, templates, checklists, and infographics: Ready to download and print to never forget about what truly matters.

This is for those who are serious about their health and ready to take action.

Why Subscribe

• Monday to Friday: a quick, practical tip you can read in a minute (suitable for busy people or busy days), grounded in the most solid and recent evidence.

• Saturday: a full-length deep dive with a clear takeaway + implementation.

• Sunday: mouth-watering recipes brought from a Medical Doctor with a Master of Science in Nutrition.

To your zenith within,

Sara Redondo, MD, MS