โMost people discover methylene blue, as I did, either through a podcast, a biohacker forum, or a slightly enigmatic bottle of brightly coloured liquid that someone claims can improve mitochondrial efficiency, boost brainpower, and possibly even combat cancer.
Sounds exciting.
When a compound has been around for almost 150 years, studied in neuroscience and referenced in cancer metabolism research, it is difficult not to ask if there is anything to it.
However, like so many things in the health optimisation area, methylene blue exists in a somewhat unique place – between intriguing scientific possibilities and internet hype.
Therefore, it is worthwhile to examine methylene blue properly.
I occasionally take methylene blue myself – usually just before a sauna session – but to be completely honest, I am still not certain if I feel any appreciable impact from using it. That is precisely why I wanted to review the science thoroughly.
- What is methylene blue?
- Why are people suddenly taking methylene blue again?
- Are any of the discussions regarding its relationship to cancer scientifically supported?
As always, this article represents my personal interpretation of my own reading and experience. This article is notintended to serve as medical advice; therefore, anyone contemplating compounds like this should consult their physicianor medical provider prior to consuming.
Methylene Blue in 30 Seconds
For readers who wish to read the short version:
What it is:
Old pharmaceutical drug developed as a dye in the 1800s.
What it's used for medically:
Treatment of methemoglobinemia and a few specialised toxicologic conditions.
Why biohackers take it:
Possible effects on mitochondrial and cognitive functions.
Does it treat cancer?
There is currently no clinically valid evidence that oral methylene blue treats cancer.
Is it dangerous?
May interact with prescribed medications and poses real dangers at improper dosages.
My view:
Scientifically interesting. May provide benefits in certain contexts. Definitely overhyped online.
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What Methylene Blue Actually Is
Methylene blue was synthesised in 1876 as a dye for use in the textile industry.
Within a couple of decades, scientists realised that methylene blue exhibited biological activity, and it quickly became one of the first synthetic compounds used in modern medicine.
Presently, methylene blue continues to be an FDA-approved pharmaceutical compound with multiple established medicaluses.
Its most well known use is for the treatment of methemoglobinemiaโa condition in which haemoglobin cannot effectively deliver oxygen to the body's tissues. The methylene blue is able to convert methemoglobin back to functional haemoglobin thereby restoring the body's ability to transport oxygen properly.
Physicians also utilise methylene blue in medicine for:
- treatment of various drug toxicities
- treatment of vasoplegic shock following cardiac surgery
- surgical staining of tissues to visualise
Methylene blue is a well known pharmaceutical compound with recognised medical applications. It is NOT some rare supplement that biohackers discovered.
How Methylene Blue Works in the Body
The primary reason for the current resurgence of interest in methylene blue is due to research involving mitochondrial biology.
Mitochondria produce ATP (energy) for cells via the electron transport chain.
Methylene blue can act as a redox cycling molecule, meaning it can both accept and donate electrons within the electron transport chain.
Specifically, it can transfer electrons between NADH and cytochrome c to help keep the electron transport chain functioning normally when portions of it are impaired.
Researchers have suggested that this could:
- assist in maintaining efficient mitochondrial function under stressful conditions
- reduce some types of oxidative damage
- influence neuronal energy metabolism
That interaction between methylene blue and the mitochondria is primarily the reason methylene blue has gained a lot of interest from researchers involved in investigating:
- neurodegenerative diseases
- aging biology
- metabolic health
Mechanism =/= Clinical Benefit.
And that distinction is important.
Why Biohackers Are Suddenly Taking Methylene Blue Again
A large portion of the current excitement surrounding methylene blue is coming from the longevity and biohacking communities.
There are a number of reasons for this.
Firstly, mitochondrial health is becoming increasingly prominent in ageing research.
Secondly, methylene blue is able to cross the blood-brain barrier, allowing it to affect brain metabolism.
Finally, early research conducted on small animals and humans suggests possible neuroprotective effects of methylene blue.
Due to these factors, some people are taking methylene blue in hopes that it will:
- improve mental clarity
- increase cellular energy
- support cognitive function
- lower the rate of ageing
However – as often tends to be the case – the reality is much less impressive.
There is little to no clinical evidence that supports the claim that methylene blue improves cognitive function in individuals without neurologic disease.
Similar to many compounds found in the longevity area, enthusiasm is exceeding the data.
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The Cancer Discussion โ Separating Hype from Evidence
This is the point at which things become very interesting – and very easy to misinterpret.
Many cancer cells exhibit different metabolic behaviours than healthy cells. A notable example is the Warburg effect, in which many tumours utilise glycolysis (sugar metabolism) instead of mitochondrial oxidative phosphorylation for energy production.
Since methylene blue influences mitochondrial respiration, researchers have investigated whether methylene blue could influence tumour cell metabolism.
Several laboratory studies have suggested the following possible mechanisms:
- influencing mitochondrial respiration in tumour cells
- increasing oxidative stress in tumour cells
- act as a photosensitiser in photodynamic therapy
Photodynamic therapy utilises light-activated compounds that produce reactive oxygen species that kill cancer cells.
Methylene blue can act as one such photosensitiser when exposed to particular wavelengths of light.
However, most of the above research is pre-clinical – meaning cell culture or animal studies.
Currently, there is no credible evidence supporting the claim that taking methylene blue orally will treat cancer.
Anyone stating otherwise is stretching the science considerably further than it warrants.
Why Some People Take Methylene Blue Alongside Light or Sauna
Because methylene blue interacts with mitochondrial metabolism and can act as a photosensitizer, it is sometimes used in conjunction with:
- red light therapy
- near-infrared light
- sauna use
The rationale is that combining metabolic stress (e.g., heat or light exposure) with mitochondrial support may promote increased cellular resistance.
At present, this concept remains speculative and is not supported by sufficient evidence outside of clinical photodynamic therapy protocols.
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My Personal Experience Using Methylene Blue
Albeit the science isnโt quite there to support it, I have gone based on my understanding of the mechanisms at play – Thus, I typically take methylene blue before sauna sessions.
The intention is that enhanced mitochondrial electron transport may aid in improving cellular stress responses during heat exposure.
However, if I'm honest, I donโt believe that I notice any significant difference as a result. It has more become part of my ritual and I donโt see it doing any harm, so have stuck with it.
That being said, it is possible that it is performing some type of function.
I consider it an experiment – not a solution.
For the majority of people, the fundamental principles still matter far more than any single compound:
Sleep.
Nutrition.
Exercise.
Stress Management.
No blue liquid replaces those.
Important Safety Considerations People Rarely Discuss
One reason physicians continue to exercise caution regarding methylene blue is that it exhibits pharmacological effects.
It is not nutritionally neutral.
Methylene blue acts as a monoamine oxidase inhibitor (MAOI), which means that it can have potentially hazardous interactions with medications that elevate serotonin levels (many antidepressants, for example). In combination with suchmedications, methylene blue can lead to serotonin syndrome, a potentially life threatening condition.
Additionally, other hazards associated with methylene blue include:
- hemolytic anaemia in individuals with G6PD deficiency
- cardiovascular effects at elevated dosages
- neurological toxicity at overdose
Dosage is extremely critical.
At low concentrations, methylene blue can act as an antioxidant.
At higher concentrations, methylene blue can act as a pro-oxidant, promoting increased oxidative stress.
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Pharmaceutical vs. Supplement Methylene Blue
Another aspect that is often overlooked is product quality.
Pharmaceutical methylene blue utilised in hospitals is manufactured according to stringent manufacturing guidelines.
Supplements containing methylene blue that are available for purchase online may contain varying amounts of impuritiesand/or inconsistent concentrations.
Some products may actually be industrial dye products that are being incorrectly ingested, introducing unknowncontaminants.
Not all methylene blue supplements are created equally.
Frequently Asked Questions Regarding Methylene Blue
Why does methylene blue give urine a blue colour?
Methylene blue is eliminated by the kidneys and converted to a compound referred to as leucomethylene blue. Both of these compounds are extremely intense in colour and can cause urine to appear blue or greenish.
While it may look alarming, this is generally harmless at proper dosages.
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Is methylene blue safe?
It can be safe when administered under medical supervision and at the correct dosage.
However, it carries risks, particularly drug interactions and toxicity at improper dosages.
Anyone wishing to use methylene blue should consult with a healthcare professional before consuming it.
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Why Do People Use Methylene Blue for Brain Health?
People are using methylene blue for brain health because it crosses the blood-brain barrier and can influencemitochondrial energy metabolism in neurons.
Initial research suggests that methylene blue may possess neuroprotective properties, however, there is presently limited to no strong clinical evidence.
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Should You Take Methylene Blue?
This is the question most people really want to know.
To answer it honestly – yes, but it depends and comes with a long list of caveats.
If you're looking for a magical supplement that increases your energy levels, improves your cognitive function and curesdisease, then methylene blue is unlikely to fulfill that expectation.
If you're interested in mitochondrial biology and are willing to cautiously explore it, methylene blue is an interesting compound that has some compelling research backing it.
Personally, as I said above, I treat methylene blue as an experiment – not a solution. And, for most people, the basics still matter far more:
Take-Aways
Methylene blue is:
- a pharmaceutical drug with recognised medical uses
- an intriguing molecule in mitochondrial biology
- an emerging area of study in neuroscience and metabolism
- rarely supported by actual science in the longevity community
Currently, methylene blue is situated somewhere between intriguing science and an incomplete story.
Therefore, the best approach is a curious attitude combined with caution.
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