05/13/2026
We often talk about mental health in terms of thoughts, feelings, and experiences. And while those things absolutely matter, what we talk about less is what is happening inside your cells that makes all of that possible.
Meet the mitochondria.
You may remember them from a high school biology class as “the powerhouse of the cell.” That is true. But researchers now understand they do so much more than produce energy.
Mitochondria act as “bioenergetic sensors,” reacting to changes in your environment such as stress and diet, and directly influencing your mood, cognition, and
overall mental state.
Here is what that means in plain language:
Your brain is an energy-hungry organ. It requires a steady, consistent energy supply to support cognitive function and emotional balance. When mitochondria are not working well, the result can look like fatigue, memory problems, and mood disorders.
Stress affects your cells. Chronic stress negatively impacts mitochondrial structure and function, making us more vulnerable to anxiety, depression, and other mental health challenges.
But here is the hopeful part. Mitochondria are not only vulnerable to stressors; they may also respond to interventions that build resilience. Supporting their efficiency may help increase energy, reduce inflammation, and improve brain signalling.
Research shows that exercise, particularly aerobic and endurance training, has the strongest and most consistent evidence for improving mitochondrial function. It may be one of the key pathways linking movement to improved mental and physical health.
Mindfulness, therapy, rest, and nutrition also play meaningful roles.
This is what integrative mental health is all about. We look at the whole person: mind, body, lived experience, and biology together.
You are not just your thoughts. You are also your nervous system, your cells, and the energy running through all of it!
When your energy is low, what is the first thing you notice shifting in your mood or mental health?
