IIN Visiting Faculty Spotlight: Dr. Deanna Minich

Today, through my work on the Rainbow Diet, teaching, and writing, I help people understand how colorful plant foods, hormones, and lifestyle rhythms interact to support long-term well-being. In The Health Coach Training Program^™, I get to guide coaches in turning knowledge into habits that truly transform health, empowering clients to nourish their bodies, cultivate balance, and build resilience across every stage of life.

Q&A: The Beginning

WHAT FIRST DREW YOU TO THE FIELD OF NUTRITION SCIENCE AND FUNCTIONAL MEDICINE?
A: While these two paths eventually came together, they actually began quite separately.

My interest in nutrition started very early in life. When I was about nine years old, my mother was pregnant with my younger brother, and that experience made her much more aware of the foods we were eating as a family. Our conversations in the kitchen and the grocery store suddenly shifted toward ingredients, labels, and what different foods might mean for health. I remember standing in the aisles reading food labels, trying to understand what was “good” and what might not be. Even though I was curious, I’ll admit that, as a child, I was sometimes a little resistant to it all!

Years later, that early curiosity evolved into my academic path. I initially thought I would go to medical school, but along the way, I felt drawn in a different direction and chose to study nutrition, biochemistry, and physiology instead. I became fascinated by how nutrients influence cellular function, metabolism, and the body’s regulatory systems. During graduate school, I was especially captivated by phytonutrients—the colorful compounds in plant foods that reflect how plants interact with their environment, and that also influence our biology. That exploration eventually shaped much of my work around color, plant compounds, and what I later called the Rainbow Diet.

My introduction to functional medicine came in 2003 when I attended one of Jeff Bland’s seminars. Dr. Bland, often referred to as the father of functional medicine, presented a systems-based view of health that completely shifted how I “saw” the body. As I listened, I remember thinking that he was speaking my language conceptually but using a different vocabulary than I had learned in nutrition science. Instead of looking at symptoms in isolation, he focused on the interconnected networks that influence health and disease.

That experience helped me bring together two worlds that had previously felt separate to me: the science of nutrition and the systems-based framework of functional medicine. When those perspectives came together, it created what we now often call functional nutrition—applying nutritional science within a root-cause, whole-systems understanding of health. At its heart, it recognizes that food, especially colorful, plant-rich foods, carries information that can influence our physiology, resilience, and overall well-being.  

WAS THERE A DEFINING MOMENT THAT DREW YOU TO EXPLORE THE DEEPER CONNECTIONS BETWEEN FOOD, LIFESTYLE, AND WHOLE-PERSON HEALTH?
A: I don’t think it was one moment, but a series of moments that began to form my path, everything from my health-conscious mom changing the course of my upbringing to my university education to everyone I met along the way. I had many fantastic teachers.

Q&A: The Bigger Picture

YOU OFTEN SPEAK ABOUT “FULL-SPECTRUM HEALTH.” HOW DO YOU DEFINE IT AND WHY DOES IT MATTER IN TODAY’S WELLNESS LANDSCAPE?
A: When I talk about “full-spectrum health,” I’m referring to a way of seeing health that includes both the visible and the less visible dimensions of our biology and lived experience. My training in nutrition science and functional medicine gave me a strong foundation in physiology, biochemistry, and nutrients. Those areas are essential.

But earlier in my life, I also spent many years studying and practicing yoga, which introduced me to the concept of the chakra system. Through that lens, I began to appreciate aspects of health that are not always captured on a lab test or explained by a single biochemical pathway.

The chakra model describes the body as an energetic system with centers associated with themes such as grounding, creativity, communication, and insight. Over time, I noticed that these energetic concepts often parallel physiological systems we study in science. For example, the chakras align closely with major endocrine glands and nerve plexuses in the body. That connection helped me start to see health in a more integrated way.

So, when I speak about full-spectrum health, I am really talking about bringing together different ways of understanding the human system. On one level, we have nutrients, hormones, mitochondria, and metabolism. On another level, we have light exposure, circadian rhythms, emotional health, and our connection to meaning and purpose. The foods we eat, especially colorful plant foods rich in phytonutrients, also carry information that interacts with these systems.

In today’s wellness landscape, it is easy to get pulled toward narrow solutions or the latest biohack. But full-spectrum health reminds us to step back and recognize that our well-being is shaped by many layers of influence, including physical, environmental, energetic, and even spiritual. We need to go from macro to micro, then back to macro.

For me, bringing together nutrition science, functional medicine, and insights from yoga helped form the framework I often describe as a rainbow spectrum of health, where each color represents a different dimension of nourishment. When those dimensions are in balance, we experience a deeper level of resilience and vitality.

Q&A: Nutrition in Practice

YOUR WORK EXPLORES HOW COLORFUL PLANT-BASED NUTRIENTS, HORMONES, AND LIFESTYLE CHOICES INTERACT. WHY ARE THESE AREAS SO IMPORTANT FOR LONG-TERM HEALTH?
A: Much of my work has focused on understanding how different layers of biology interact. Nutrition is one layer, hormones are another, and lifestyle factors like sleep, light exposure, movement, and stress form the environment in which all of that biology operates.

Colorful plant foods are especially interesting to me because they contain phytonutrients, the compounds that give plants their vibrant colors. As I like to say, “They make plants pretty!” These compounds reflect how plants interact with their environment, protecting them from light exposure, oxidative stress, and other challenges. When we eat these foods, those same compounds can influence signaling pathways in our own bodies related to inflammation, metabolism, detoxification, and cellular resilience.

Hormones are another key piece of the puzzle. They act as the body’s messengers, coordinating communication between systems such as the brain, thyroid, adrenals, reproductive organs, and metabolism. Over the course of life, hormonal patterns naturally shift, particularly for women during transitions like perimenopause and menopause. Supporting those systems through nutrition, herbs, and lifestyle choices can make a meaningful difference in how resilient the body remains during those changes.

Lifestyle factors often determine how well these systems function together. Our circadian rhythms, exposure to natural light and darkness, sleep patterns, stress levels, and movement all influence hormonal signaling and metabolic health. Even the timing and diversity of the foods we eat can play a role.

When you put these pieces together, you begin to see that long-term health is not about a single nutrient or a single habit. It is about the interaction between what we eat, how we live, and how our internal systems communicate. Colorful plant foods, balanced hormonal signaling, and supportive lifestyle rhythms create a kind of biological harmony that helps the body maintain resilience over time.

IF SOMEONE WANTED TO BEGIN SUPPORTING THEIR BODY THROUGH NUTRITION TODAY, WHERE WOULD YOU SUGGEST THEY START?
A: One of the most important places to start is by simplifying the approach and returning to the fundamentals. In today’s wellness world, it is easy to feel overwhelmed by conflicting advice, new supplements, and the latest health trends. But the body often responds best when we begin with the basics. 

I often encourage people to start by looking at the diversity and color of the foods on their plate. Colorful plant foods such as leafy greens, berries, carrots, herbs, and spices contain a wide range of phytonutrients that support many systems in the body. When we eat a variety of colors, we naturally bring in different compounds that help influence inflammation, detoxification pathways, metabolic balance, and cellular health. 

Another foundational step is paying attention to daily rhythms. Our bodies are deeply connected to patterns of light and darkness, sleep and waking, activity and rest. Supporting circadian rhythms through consistent sleep, regular meals, time outdoors in natural light, and periods of rest can have a powerful influence on hormones, metabolism, and energy. 

I also encourage people to think about nourishment more broadly. Food is important, but so are hydration, movement, time in nature, and meaningful connection with others. Health is rarely the result of one single change. It is usually the result of many small, supportive habits that build resilience over time. 

So, if someone wants to begin today, I would suggest starting with a simple question: How can I add more nourishment into my day? Sometimes the most powerful shifts come from the smallest, most consistent steps.

Q&A: Teaching at IIN 

AS VISITING FACULTY AT IIN, WHAT EXCITES YOU MOST ABOUT SHARING YOUR KNOWLEDGE WITH FUTURE HEALTH COACHES?
A: What excites me most about working with future health coaches is the ripple effect that can occur when knowledge is shared in a meaningful way.

Health coaches are often on the front lines of lifestyle change. They spend time with people in a way that many healthcare systems simply cannot. They listen, they support, and they help individuals translate health concepts into everyday habits. That role is incredibly powerful.

As someone trained in nutrition science and functional medicine, I love helping coaches understand the deeper “why” behind the recommendations they may share. When you understand the biology of food, hormones, circadian rhythms, and lifestyle influences, it becomes much easier to guide people toward sustainable changes rather than quick fixes.

What also inspires me about the IIN community is the openness to integrating different dimensions of health. Coaches are often interested not only in the science of nutrition, but also in the emotional, environmental, and even spiritual aspects of well-being. That aligns closely with how I think about health through a broader, full-spectrum lens.

Ultimately, what excites me most is knowing that when one health coach becomes more informed and empowered, they can go on to support hundreds or even thousands of people in their communities. Education becomes a catalyst for change that spreads far beyond a single classroom or program. 

HOW DO YOU APPROACH TEACHING COMPLEX NUTRITION SCIENCE IN A WAY THAT FEELS PRACTICAL AND EMPOWERING FOR COACHES AND THEIR CLIENTS?
A: One of the things I try to do when teaching nutrition science is translate complexity into patterns that people can see and apply in everyday life.

Nutrition science can be incredibly detailed. We can talk about biochemical pathways, receptors, gene expression, and cellular signaling. All of that is important, but if it stays at the level of complexity, it can feel overwhelming. My goal is to help people see the underlying principles so they can connect the science to real food and daily habits.

One approach I often use is visual frameworks. For example, the Rainbow Diet grew out of my interest in phytonutrients and the realization that color in plant foods reflects different protective compounds. When coaches understand that red foods, orange foods, green foods, and so on provide different phytonutrient families, the science becomes something they can literally see on their plate.

I also try to connect nutrition science to the body’s systems and rhythms. When people understand how food interacts with hormones, metabolism, the gut microbiome, and circadian biology, they begin to see why certain lifestyle practices matter. Suddenly, a recommendation like eating more leafy greens or improving sleep is not just a rule. It has a clear biological story behind it.

Ultimately, my goal is to help coaches feel confident translating science into practical guidance. When they understand the concepts at a deeper level, they can adapt those ideas to everyone they work with. That is when education becomes empowering rather than overwhelming. 

WHAT IS ONE KEY INSIGHT YOU HOPE STUDENTS TAKE AWAY FROM YOUR LECTURES?
A: One insight I hope students take away from my lectures is that nutrition is really the study of relationships.

In science, we often focus on individual nutrients, a vitamin here, a mineral there. But when you look more closely, nutrition is not just about single components. It is about how those components interact with each other and with the body. Much of nutrition science is built around relationships and ratios. Think about the balance between omega-6 and omega-3 fatty acids, sodium and potassium, calcium and magnesium, or even the interplay between macronutrients like carbohydrates, fats, and proteins.

The body is constantly working to maintain balance across these relationships. When those ratios shift too far in one direction, we often begin to see physiological stress or dysfunction.

Interestingly, this idea of balance is not new. Traditional systems of medicine recognized it long ago. In Traditional Chinese Medicine, for example, the concept of yin and yang describes the dynamic balance between complementary forces in the body. Health arises when those forces remain in harmony and able to adapt.

In many ways, modern nutrition science reflects a similar principle. Instead of yin and yang, we talk about nutrient ratios, regulatory systems, and biological feedback loops. But the underlying idea is very similar. Health emerges from balance and from the relationships between different parts of the system.

So one of the key takeaways I hope students leave with is that nutrition is not just about substances. It is about systems and relationships. When you begin to see health through that lens, it opens the door to a deeper and more integrative understanding of nourishment.  

Q&A: For Future & Current Health Coaches

WHAT ROLE DO YOU SEE HEALTH COACHES PLAYING IN THE FUTURE OF INTEGRATIVE AND FUNCTIONAL HEALTH?
A: I see health coaches playing an increasingly important role in the future of integrative and functional health.

Many of the conditions we see today are rooted in lifestyle patterns, things like nutrition, sleep, stress, movement, and daily rhythms. These are areas where change happens gradually and where people often need guidance, accountability, and encouragement over time. Health coaches are uniquely positioned to support that process.

I was just at an event centered on menopause, and it reminded me how powerful support can be during life transitions. Periods like perimenopause and menopause are not just hormonal shifts. They often bring changes in sleep, metabolism, mood, identity, and daily routines. These moments of transition can feel overwhelming, but they are also powerful opportunities to re-evaluate habits and create new foundations for health. Having a health coach during these times can make a meaningful difference because they help translate information into practical steps and provide consistent support along the way.

In many ways, coaches help bridge the gap between knowledge and implementation. A practitioner may outline a plan or identify root causes, but it is often the health coach who helps individuals translate those insights into daily habits and sustainable behavior change. They spend time listening, asking thoughtful questions, and helping people move forward step by step.

As healthcare continues to evolve, I believe health coaches will become even more important as partners in care. They help create continuity, empowerment, and education for individuals navigating their health journeys. In many ways, they are catalysts for change, helping people reconnect with the daily choices that shape their long-term health. 

IN YOUR EXPERIENCE, WHAT MINDSET OR SKILL DISTINGUISHES A COMPETENT HEALTH COACH FROM ONE WHO CREATES A TRANSFORMATIVE, LASTING IMPACT FOR THEIR CLIENT?
A: In my experience, one of the most important qualities that distinguishes a good health coach from a truly transformative one is the ability to listen deeply and meet people where they are.

Knowledge about nutrition, lifestyle medicine, and health science is certainly important. But information alone rarely changes behavior. What often creates lasting change is the relationship and the space a coach holds for someone to explore their habits, motivations, and challenges.

The most impactful coaches I have seen approach their work with curiosity rather than judgment. They ask thoughtful questions, help clients reflect on what is happening in their lives, and guide them toward small, meaningful shifts that feel achievable. In that way, the coach becomes less of a “fixer” and more of a facilitator of change.

Another important mindset is patience. Health transformation rarely happens overnight. It unfolds over time as people gradually shift their relationship with food, stress, movement, and self-care. Coaches who understand that process and can support clients through both progress and setbacks often create the most sustainable results.

Ultimately, what distinguishes a transformative coach is the ability to combine knowledge with empathy and perspective. They help people reconnect with their own capacity for change. When clients begin to feel empowered rather than overwhelmed, that is when real, lasting transformation can occur. 

HOW CAN COACHES HELP CLIENTS TRANSLATE NUTRITION SCIENCE INTO DAILY HABITS WITHOUT OVERWHELM?
A: One of the most helpful things coaches can do is translate nutrition science into simple, actionable steps that fit into a person’s daily life.

Nutrition research can be incredibly detailed and sometimes overwhelming. Clients may hear about macronutrient ratios, gut microbiome diversity, phytonutrients, and metabolic pathways, and while all of that science is valuable, it can feel difficult to apply in the moment when someone is simply trying to decide what to eat for breakfast or what to prepare for dinner.

Health coaches play an important role in helping people bridge that gap. Instead of focusing on dozens of rules, they can guide clients toward a few foundational habits. For example, encouraging people to include a variety of colorful plant foods throughout the week, prioritizing whole foods over ultra-processed ones, supporting consistent meal timing, and paying attention to hydration, sleep, and stress.

I often encourage coaches to think in terms of patterns rather than perfection. Small, repeatable habits tend to be far more sustainable than dramatic changes that are difficult to maintain. Even something as simple as adding an extra serving of vegetables each day or diversifying the colors on the plate can gradually shift nutritional patterns in a meaningful way.

Another helpful strategy is helping clients understand the “why” behind recommendations. When people see how nutrition connects to their energy, mood, sleep, or hormonal health, the changes begin to feel more relevant and motivating.

Ultimately, the goal is not to overwhelm clients with information but to empower them with understanding and practical steps. When science is translated into simple daily practices, it becomes something people can actually live with and sustain over time.

Q&A: Personal Integration

WITH SUCH A FULL CAREER IN RESEARCH, TEACHING, AND CLINICAL WORK, WHAT PERSONAL PRACTICES HELP YOU STAY BALANCED AND ENERGIZED?
A: Over the years, I have come to appreciate that staying balanced is not about doing one thing perfectly. Perfectionism only creates stress for me. Instead, I feel it is about maintaining supportive rhythms throughout the day and across the seasons of life.

One of my anchors is spending time in the morning connecting with nature and light. I live in the Pacific Northwest, in a rural, wooded area, so that is relatively easy for me. Getting outside early in the day helps set my circadian rhythm and brings a sense of grounding before the day becomes busy. I also prioritize movement, whether that is yoga, walking, or simply taking time to stretch and breathe between long periods of writing or teaching. My background in yoga has always reminded me that the body and mind function best when we create space for both activity and stillness.

Food is another important part of how I maintain energy. I try to eat in a way that reflects the principles I teach, focusing on colorful, plant-rich meals that provide a diversity of nutrients and phytonutrients. That approach helps support steady energy and reminds me daily of the connection between food and physiology.

I also make time for creativity. Making paintings with bright colors and organic shapes has been pivotal to my healing. Art, reflection, and time in nature are ways I reconnect with a sense of curiosity and inspiration. For me, those practices help balance the analytical side of scientific work with a more intuitive and reflective side of life.

Ultimately, what helps me stay energized is remembering that health is a living practice. The same principles I teach about nourishment, rhythm, and balance are the ones I try to return to in my own life.

WHEN LIFE BECOMES DEMANDING, WHAT HELPS YOU RECONNECT TO YOUR OWN WELLBEING?
A: When life becomes demanding, one of the most important ways I reconnect with my well-being is by protecting my sleep.

Sleep is one of the most powerful restorative processes we have. It is the time when the brain and body recalibrate, when hormones reset, when the nervous system settles, and when many of our repair and restoration processes take place. I have learned over the years that when sleep is compromised, everything else becomes harder. Energy, focus, mood, and resilience all depend on that nightly recovery.

So when life gets especially full, I try to return to the fundamentals that support good sleep. That includes getting natural light during the day, winding down in the evening, and creating a rhythm that allows my body to transition into rest. Protecting that window of recovery helps me wake up clearer, more grounded, and better able to meet the demands of the day.

I also find that simple moments of connection help me reset. Spending time with my cat, Leilani, is one of those small but meaningful ways I reconnect with calm. Animals have a way of bringing us back into the present moment. Taking a few minutes to slow down, sit with her, and step away from the constant pace of work helps restore perspective.

For me, well-being often comes back to these simple anchors. Prioritizing sleep, reconnecting with quiet moments, and allowing space to reset can make a profound difference in how we navigate busy seasons of life.

Q&A: Quick Perspective

WHAT’S ONE COMMON MYTH ABOUT NUTRITION YOU’D LOVE TO RETIRE?
A: One nutrition myth I would love to see retired is the idea that there is one perfect diet for everyone.

In fact, one of the most common questions people ask me is, “What should I eat?” It is such a natural question, and it reflects how much people want clear guidance. But nutrition is rarely that simple.

Nutrition is often presented in very absolute terms. One day carbohydrates are the problem, another day it is fats, and then a specific food or diet pattern is portrayed as the universal solution. In reality, human biology is much more complex and individualized than that.

Each person has a unique combination of genetics, microbiome composition, lifestyle patterns, cultural food traditions, and life stage. What supports one person’s metabolism or hormonal balance may not be the same for someone else. Even within the same individual, nutritional needs can shift over time, particularly during transitions such as pregnancy, menopause, aging, or periods of increased stress.

What tends to be more helpful is focusing on foundational principles rather than rigid rules. Eating a variety of whole foods, including diverse and colorful plant foods, supporting balanced meals, and aligning eating patterns with daily rhythms are approaches that can work across many different individuals.

When we move away from the idea of a single “perfect” diet and instead think about nourishment as something dynamic and personalized, nutrition becomes much more empowering and sustainable. 

WHAT’S SOMETHING YOU’RE CURRENTLY LEARNING, RESEARCHING, OR RETHINKING IN YOUR WORK?
A: One area I continue to explore and rethink in my work is how light and circadian rhythms influence nutrition and metabolism.

For many years, nutrition science focused primarily on what we eat. More recently, we have begun to appreciate that when we eat, how we align with light and darkness, and how our daily rhythms unfold can be just as important. The body is deeply regulated by circadian biology. Hormones, metabolism, immune function, and even mitochondrial activity follow rhythmic patterns across the day.

This has led me to think more about the relationship between food, light, and biological timing. For example, how exposure to natural light helps regulate circadian signals, how melatonin and other hormones shift across the day and night, and how the timing of meals can influence metabolic health.

I am also interested in how plant compounds fit into this broader picture. Plants themselves respond to light cycles and environmental signals, producing compounds like polyphenols and carotenoids that reflect those interactions. When we eat these foods, we may be participating in a kind of biological conversation between plants, light, and human physiology.

So one of the themes I continue to explore is how nutrition fits into this larger ecological and circadian framework. It reminds us that we are not separate from nature’s rhythms. Our biology is constantly responding to them. 

Q&A: Fun & Light Favorites

BEST DECISION YOU EVER MADE IN YOUR CAREER OR PERSONAL LIFE?
A: Not going to medical school.

A BOOK, PODCAST, OR RESOURCE YOU’D RECOMMEND TO THE IIN COMMUNITY?
A: One resource I often recommend is PubMed.

While books can be helpful, they can quickly become outdated because scientific knowledge evolves so rapidly. PubMed provides direct access to the latest peer-reviewed research in nutrition, metabolism, and health. Learning how to explore the scientific literature helps health coaches stay current and develop a deeper, evidence-informed understanding of the topics they teach.  

IF YOU COULD BE ANY FRUIT OR VEGETABLE, WHICH WOULD YOU BE—AND WHY?
A: I would choose a mango.

There’s just something about mangoes that gives me a good feeling every time I see or taste them. They have this beautiful golden color, an incredible sweetness, and a richness that feels both nourishing and joyful. Every bite feels vibrant and alive.

I also appreciate that mangoes are packed with nutrients and phytonutrients, especially carotenoids that give them that deep orange hue. It’s a great reminder that the colors in foods often signal the presence of compounds that support our biology.

But honestly, part of my answer is simply that I love them. Food should nourish us, but it should also bring pleasure. Mangoes do both for me.

WHAT ARTIST, BAND, OR MUSIC DO YOU LISTEN TO WHEN YOU NEED MOTIVATION OR INSPIRATION?
A: When I need motivation or inspiration, I often gravitate toward instrumental music or soundscapes rather than a specific band. I like the Moongate app. Music without lyrics helps create a kind of open mental space where ideas can flow more freely. I enjoy ambient, classical, or nature-inspired compositions that have rhythm and movement but still feel calming. That kind of music helps me stay focused when I am writing, researching, or preparing talks.

So when I need inspiration, I usually choose music that creates a sense of flow and spaciousness, something that helps the mind settle while allowing creativity to emerge. That said, there are moments when I revert to 80s music!  

WHAT’S A FUN FACT ABOUT YOURSELF THAT MIGHT SURPRISE PEOPLE?
A: One thing that might surprise people is my deep interest in spirituality.

Most people know me through my work in nutrition science, research, and education, but alongside that scientific path I have always been curious about the deeper and more philosophical aspects of health and human experience. I have long been interested in questions about meaning, consciousness, energy, and how different traditions understand well-being. That curiosity actually led me to start a podcast focused on science and spirituality, where I explore conversations that bridge these two worlds. I enjoy speaking with people who are thinking about health not only through the lens of biology, but also through perspectives related to consciousness, purpose, and the human experience.

For me, science and spirituality are not opposing ideas. They are simply different ways of exploring the same question of what it means to be well and fully alive. Bringing those perspectives together has become an important and inspiring part of my work.