Mitome | World's First Mitochondrial Function Test  | Created by Chris Masterjohn, PhD | Optimize Your Health
Mitome | World's First Mitochondrial Function Test  | Created by Chris Masterjohn, PhD
Colorized MRI scans of two human brains, showing different activation areas.
Close-up of two glowing bacteria or microbes with a dark background and filamentous structures.
Mitome | World's First Mitochondrial Function Test  | Created by Chris Masterjohn, PhD
Close-up of a transparent capsule with a glowing interior, floating above a dark surface with sparks or reflections.
Mitome | World's First Mitochondrial Function Test  | Created by Chris Masterjohn, PhD
Close-up of a clear capsule filled with small silver beads and bubbles.
Mitome | World's First Mitochondrial Function Test  | Created by Chris Masterjohn, PhD
Two human profiles facing each other with DNA strands intertwined around their faces, one in blue and the other in orange, symbolizing genetic connection or communication.
Mitome | World's First Mitochondrial Function Test  | Created by Chris Masterj
Diagram showing stages of electron transport chain in mitochondria, including NADH, NAD+, ubiquinone, cytochrome c, and oxygen, with associated electron energy and redox potential.
Mitome | World's First Mitochondrial Function Test  | Created by Chris Masterjohn, PhD
Energy Metabolism Masterclass'.
A man with short brown hair and a beard speaking into a microphone, wearing a gray shirt, with a blue background and the text 'Four Markers Every Expert Misses' 
Mitome | World's First Mitochondrial Function Test  | Created by Chris Masterjohn, PhD
Mitome | World's First Mitochondrial Function Test  | Created by Chris Masterjohn, PhD
Creatine and Your Health
Scatter plot with data points showing a positive correlation between serum ferritin levels and FEVS TIBC levels.
Mitome | World's First Mitochondrial Function Test  | Created by Chris Masterjohn, PhD

9/1/2025

What Everyone Should Be Doing For Their Health

Make sure you're keeping up with the basics.

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8/15/2025

What to Do About SSRI Withdrawal Mitochondrial Dysfunction

The final installment in our series on understanding the truth about SSRIs.

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8/1/2025

This Is 25x More Effective Than Antidepressants—And It's Not a Drug

In this article we will examine a potential treatment for depression that so far looks to be almost 25 times more effective than antidepressants and four times more effective than ketamine at creating long-term psychological resilience.

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7/29/2025

SSRIs Can Cause Severe Mitochondrial Dysfunction

In at least one out of 5,500 people – possibly at a much higher rate due to ignorance and underdiagnosis – sertraline (Zoloft) is such a potent mitochondrial poison that it can induce a devastating disease that has heretofore been thought to be a much rarer genetic disorder.

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7/21/2025

SSRI Withdrawal Is Mitochondrial Dysfunction

In analyzing the biochemical data of clients over the last year I have worked on two cases involving catastrophic failures of energy metabolism that occurred in the wake of SSRI withdrawal. In both cases, switching SSRIs from one to another also seemed to play a role in precipitating energetic dysfunction.

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7/13/2025

SSRIs are Mitochondrial Drugs

These not only interact with the ability of serotonin and melatonin to support mitochondrial function in both good and bad ways, but are themselves drugs that act on mitochondria both by activating receptors that have little to do with serotonin inside cells and by traveling to the mitochondria and having variable effects that are mostly toxic.

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7/12/2025

Your Mitochondria and the Two Faces of Serotonin

In our series on how to understand the truth about serotonin, SSRIs, SSRI side effects, and the sometimes devastating effects of SSRI withdrawal, we have so far established that serotonin is a primarily non-brain non-neuronal signaling chemical that is fundamentally involved in the hypoxia response, and is also the substance from which we make melatonin, our mitochondria’s guardian angel.

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1/29/2024

The Mitochondrial Nutrient Missing From Every Supplement

It's the respiratory chain component you never learned about in school.

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5/24/2023

Energy Metabolism Governs Everything

That was not an exaggeration. Everything.

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4/28/2023

A PhD's Secret Weapon: The Four Biomarkers Every Expert Should, But Doesn’t, Analyze

The most useful tests are the ones no one ever orders.

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6/23/2024

Your Cells Are Starving for Creatine

If you're not eating this type of diet you need a supplement.

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5/23/2024

You Don't Understand Serum Ferritin

Neither does your doctor, and neither do I. But here's what we all don't know.

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Blue flames against a black background with text that says 'Methylene Blue'.
Mitome | World's First Mitochondrial Function Test  | Created by Chris Masterjohn, PhD

7/1/2023

The Guide to Methylene Blue

A 51-page guide on everything you need to know about methylene blue.

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Mitome | World's First Mitochondrial Function Test  | Created by Chris Masterjohn, PhD
Depression and SSRI's

9/27/2025

Beat Depression Without SSRIs or Other Drugs

The ultimate how-to guide to obtain resilient mental health while boosting mitochondrial function instead of strangling it.

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Depression Protocol, SSRI
Mitome | World's First Mitochondrial Function Test  | Created by Chris Masterjohn, PhD

11/9/2025

How to Taper off SSRIs

Slowly and hyperbolically.

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Mitome | World's First Mitochondrial Function Test  | Created by Chris Masterjohn, PhD

10/6/2025

The Science Behind The Depression Protocol

Hundreds of randomized controlled trials show that non-drug approaches are superior to drugs. Here's the evidence.

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Mitome | World's First Mitochondrial Function Test  | Created by Chris Masterjohn, PhD

10/8/2025

Are Antidepressants Just Treating Protein Deficiency?

This one amino acid outperforms antidepressant drugs in clinical trials but protein itself would be even better.

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Mitome | World's First Mitochondrial Function Test  | Created by Chris Masterjohn, PhD

11/3/2025

Resolve Your Inflammation With This

One of the most promising natural resolvers of inflammation is a milk-derived protein known as lactoferrin.

As we will see momentarily, however, not all lactoferrin is created equal.

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Mitome | World's First Mitochondrial Function Test  | Created by Chris Masterjohn, PhD

11/4/2025

Masterjohn’s Weekly Five

Edition 1: Pharma vs Nature, lima beans, common problems driven by rare bottlenecks, hiding the control group, and bonk-free marathons fueled by chocolate.

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Mitome | World's First Mitochondrial Function Test  | Created by Chris Masterjohn, PhD
Mitome | World's First Mitochondrial Function Test  | Created by Chris Masterjohn, PhD

9/12/2025

3 Tests to Transform Your Health (and Your Lifespan)

If there are still things you want to improve about your current health or that you want to optimize to protect your future health and longevity, it may be time to do some lab testing beyond whatever your doctor orders for you in your checkups.

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Statins Are Mitochondrial Toxins

And CoQ10 isn't enough to fix this.

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3 Tests to Transform Your Health (and Your Lifespan)

If there are still things you want to improve about your current health or that you want to optimize to protect your future health and longevity, it may be time to do some lab testing beyond whatever your doctor orders for you in your checkups.

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11/25/2025

The science that convinced me mitochondria are the key to longevity

You could be one metabolic bottleneck away from feeling amazing.

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