If you’ve ever felt tired for no clear reason… dealt with nagging brain fog… or wondered why you’re burning out even though your labs look “normal,” you’re not alone. So many people in our wellness community share the same struggle. And according to Functional Medicine Doctor, Mark Hyman, there’s a powerful - and often overlooked - explanation: your energy system.
In this fascinating new podcast episode, Dr. Hyman sits down with Columbia University scientist Dr. Martin Picard, a leading expert in mitochondrial psychobiology, to explore how energy flows through the body, how mitochondria orchestrate that flow, and how this “missing dimension of medicine” affects everything from your mood to your aging process.
You'll definitely want to check this one out - it's a bit long, but well worth the watch!
Here are some of the key insights explored in the episode:
Energy Is the “Missing Dimension” of Medicine
Fatigue, burnout, and mental fog aren’t just motivational issues—often, they signal that your cells are struggling to keep up with life’s energy demands, even if your lab results look normal.
Mitochondria Do Far More Than Make ATP
We all learned that mitochondria are the “powerhouses” of the cell, but Dr. Picard explains how they’re also a communication hub, sending biochemical messages (including mitokines) that influence stress, emotions, inflammation, and healing.
Stress Literally Steals Your Energy
When the body is overloaded—emotionally, physically, metabolically—it reallocates energy away from growth, repair, digestion, and mental clarity.
Rest isn’t indulgent; it's a biological requirement for resilience!
The Energy Resistance Principle (ERP)
This simple but profound idea reminds us that the body is constantly balancing energy drains and gains. Your daily choices—from sleep and food to emotional boundaries and work pace—shape your lifelong vitality.
A New Way to Understand Symptoms
Instead of seeing fatigue or brain fog as isolated issues, this conversation encourages us to ask:
What is draining my energy—and how can I support my mitochondria to recover it?
Key Topics Covered in the Episode
Here’s a quick look at some of the areas Dr. Hyman and Dr. Picard explore:
- How mitochondrial function affects mental health
- Why ketogenic diets show promise for certain neurological conditions
- What makes energy so hard to measure—and why that matters
- Mitokines and the new science of mitochondrial signaling
- How metabolic flexibility shapes overall resilience
- The role of NAD, electron transport, and aging
- How the modern environment stresses mitochondria
- The “Goldilocks zone” of energy flow and nervous system balance
- Mitochondrial clues in heart disease, inflammation, and chronic illness
- Functional medicine’s personalized approach to restoring energy
- How stress, illness, and recovery change your energy budget
- Emerging biomarkers like GDF15 for monitoring energy strain
- Practical lifestyle steps to support mitochondrial health
If you’re curious about your own energy patterns—or you’ve been feeling “off” without answers—this is a powerful place to start.
Ready to dive in? Watch the full conversation with Dr. Mark Hyman and Dr. Martin Picard here:
This episode is a reminder that your energy is not random, mysterious, or fixed.
It’s responsive. It’s adaptable. And it reflects the sum of your daily choices and stressors.
Understanding the biology of energy can empower you to:
- make more aligned lifestyle choices,
- recognize early signs of burnout,
- support your body’s ability to heal, and
- build metabolic resilience that lasts.
And that means you have more influence over your health and vitality than you might think.
To your health,
Rose.

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