The Surprising Health Benefits of Methylene Blue Analysis by Dr. Joseph Mercola
April 17, 2022
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STORY AT-A-GLANCE
> Methylene blue helps mitochondrial respiration and improves brain energy metabolism. By doing that, it can improve cognitive performance and prevent neurodegeneration
> Methylene blue is the parent molecule for hydroxychloroquine and chloroquine, off-patent drugs commonly used to treat not only malaria but also COVID-19
> Emergency rooms around the world use it, as it’s the only known antidote for metabolic poisons causing methemoglobinemia, which is when a metabolic poison interferes with the transport of oxygen in hemoglobin Methylene blue is a hormetic drug, so low doses have the opposite effect of high doses
> Low doses, 0.5 mg to 1 mg per kilo of bodyweight, are recommended for nonacute, longer-term treatments. Uses include the prevention and treatment of dementia, post-stroke and other brain injuries, cognitive enhancement, and the general optimization of health if you’re already healthy
In this interview, Francisco Gonzalez-Lima, Ph.D., discusses a really powerful strategy to improve your mitochondria, which generate the vast majority of the energy your cells produce from food.
Gonzalez-Lima is an expert on methylene blue, which helps mitochondrial respiration and improves brain energy metabolism. By doing that, it can improve cognitive performance and prevent neurodegeneration.
“With methylene blue, we have been able to show all of those [benefits],” Gonzalez-Lima says. “Our group was the first to map the effects of methylene blue in the brain of humans and show its effects on improving brain metabolism, blood flow and memory function.”
What Is Methylene Blue?
Methylene blue is the parent molecule for hydroxychloroquine and chloroquine, off-patent drugs commonly used to treat not only malaria but also COVID-19. Best known as a fish tank antiseptic and textile dye for blue jeans, it was actually the first synthetic drug in modern history, developed in 1876. Since then, we’ve discovered it has many really important medicinal benefits.
The first medical application of methylene blue was for malaria. In 1890, Paul Ehrlich, a scientist at the famous Charité Hospital in Berlin, Germany, discovered methylene blue inhibits an enzyme that weakens the malaria parasite.
One of the first antipsychotic medications was also made from methylene blue. Other drugs developed from or with it include antibiotics and antiseptics. In the past, it was commonly used to treat urinary tract infections. It’s also been used as an antiviral agent in blood used for transfusions.
To this day, methylene blue is found in every hospital in the world, as it’s the only known antidote for metabolic poisons (any poison that interferes with oxygen transport or displaces oxygen, either from the blood or from the mitochondria).
For example, if you’re admitted for carbon monoxide poisoning, they’ll give you methylene blue intravenously. Cyanide is another example. The only known antidote for cyanide poisoning is methylene blue. It’s also been speculated that methylene blue might be useful in the treatment of acute lung infections such as SARS-CoV-2.
Importantly, methylene blue is a hormetic drug, which means that low doses have the opposite effect as high doses. For example, it’s primarily used in emergency rooms at the upper dosage limit (3 milligrams to 4 mg per kilo of bodyweight) for methemoglobinemia, which is when a metabolic poison interferes with the transport of oxygen in hemoglobin, by the iron in hemoglobin being oxidized to +3 rather than its normal reduced +2 state.
However, if you take too high a dose, you produce methemoglobinemia. At dosages in between, there’s no effect. Likewise, while low dosages have an antioxidant effect, high doses are pro-oxidative and can kill bacteria and tumor cells.
Methylene Blue, an Antioxidant and Energy Producer
Gonzalez-Lima’s research has primarily focused on low-dose benefits for nonacute purposes over the longer term — such as neuroprotective benefits and cognitive enhancement. While it has several mechanisms of action, a unique feature is that it acts on the level of electrons. He explains:
“Our body uses electrons as part of the electron transport chain that happens inside mitochondria, and these electrons, moved along through the mitochondria, are generated from electron donors that we produce by the foods that we eat.
All the foods that we eat, the only way they contribute to energy is by producing electron donors. They donate these electrons to the electron transport inside the mitochondria. The ultimate electron acceptor in nature is oxygen. That's why the process of removing electrons from a compound is referred to as oxidation.
In mitochondria, this process is called oxidative phosphorylation. The electron transport is coupled with the phosphorylation of adenosine to eventually produce the adenosine triphosphate molecule (ATP). Methylene blue is an electron cycler. It's an autooxidizing compound.
So, methylene blue donates its electrons directly to the electron transport chain, it obtains electrons from surrounding compounds, and maintains oxygen consumption and energy production. By doing this, it helps oxygen to be fully reduced into water.
So, it becomes two things that are often not found together. It acts as an antioxidant, because oxygen is neutralized into water by donating electrons to the electron transport, and it produces energy, because when the electron transport pumps are moving along oxidative phosphorylation, you have an increase in ATP formation.
Oftentimes, we have things that improve energy metabolism, but then they lead to oxidative stress. In the case of methylene blue, that's not the case.
You can increase oxygen consumption rates, increase ATP production for energy metabolism, and at the same time reduce oxidative stress which, of course, will lead to reduction in oxidative damage at the level of mitochondria, then at the level of the other parts of the cells, and eventually membranes of the cells, and reactions that are cascades of this oxidative damage.”
Basically, as an electron cycler, methylene blue acts like a battery, but unlike other compounds that do the same thing, it doesn’t cause damaging oxidation in the process. If anything interferes with oxygenation or cellular respiration, such as cyanide, methylene blue is able to bypass that point of interference through electron cycling, thus allowing mitochondrial respiration, oxygen consumption and energy production to function as it normally would.
Improved Mitochondrial Respiration Improves Health, Cognition
Methylene blue can also be helpful in instances where you have impaired blood flow that prevents the delivery of oxygenated hemoglobin to the tissues. In this case, methylene blue helps counteract the reduced blood flow by optimizing the efficiency of mitochondrial respiration.
Healthy blood flow is particularly important for brain function, and many older people have chronic hypoperfusion that contributes to neurodegeneration and memory problems. These issues, Gonzalez-Lima says, can be prevented by methylene blue.
In summary, inside the electron transport chain in your mitochondria are five complexes, the primary purpose of which is to conduct the electrons generated from food, primarily carbohydrates and fat, in the form of acetyl CoA. Sometimes the electron transport chain gets blocked or impaired, and methylene blue is able to bypass such blockages.
When you’re perfectly healthy, low doses of methylene blue will enhance oxygen consumption, mitochondrial respiration and ATP production above baseline, basically optimizing the whole system. So, it acts as a metabolic enhancer and not just an antidote for metabolic poisons and other inhibitory processes.
The most important complex, Cytochrome c Oxidase, which catalyzes the reaction of oxygen becoming water, is blocked by cyanide. But methylene blue can insert electrons wherever there is a blockage.
What’s more, when you’re perfectly healthy, low doses of methylene blue will enhance oxygen consumption, mitochondrial respiration and ATP production above baseline, basically optimizing the whole system. So, it acts as a metabolic enhancer and not just an antidote for metabolic poisons and other inhibitory processes.
Methylene blue’s action on mitochondrial respiration is also coupled with biochemical upregulation of your oxygen consumption machinery in general, and hemodynamic processes that increase local blood supply to tissues.
And, as detailed by Gonzalez-Lima in the interview, this upregulation remains even after the methylene blue is expelled from your system (primarily through urination unchanged as your body minimally metabolizes it), and over time, it can actually increase the number of mitochondria. In your brain, this will benefit cognition, as your brain is the most energy-dependent organ in your body.
Methylene blue also activates the Nrf2 pathway. Nrf2 is a transcription factor that, when activated, goes into the cell’s nucleus and binds to the antioxidant response element (AREs) in the DNA. It then induces the transcription of further cytoprotective enzymes such as glutathione, superoxide dismutase catalase, glutathione peroxidase, phase II enzymes, heme-1 oxygenase and many others.
Methylene Blue for Brain Health
Perhaps one of the most revolutionary benefits of methylene blue is for the prevention and treatment of dementia, neurodegenerative diseases such as Alzheimer’s and Parkinson’s, and neural injuries caused by stroke and traumatic brain injuries (TBIs). This is particularly important as the COVID jabs have radically increased strokes. As explained by Gonzalez-Lima:
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