Flow Well Series: Dr. Haroldo Magarinos on Nitric Oxide, the Oral Microbiome, and Detoxing for Vascular Health
Most practitioners talk about blood flow from the cardiovascular system down. Dr. Haroldo Magarinos starts somewhere most people never think to look - the mouth.
As a pioneer in oral-systemic medicine and the founder of DetoxU, Dr. Magarinos has built his practice around a framework that connects what happens in the mouth, gut, liver, and blood vessels into a single, coherent picture of health. His insight isn't just that these systems are linked. It's that the health of one is a direct signal about the health of the others and that ignoring those signals is how chronic disease quietly builds over time.
His perspective on Nitric Oxide reflects that same systems thinking. For Dr. Magarinos, NO production isn't purely a cardiovascular conversation. It's an oral microbiome conversation. An environmental health conversation. A detoxification conversation. And it starts with habits so simple most people assume they can't possibly matter.
Here's how he thinks about whole-body health, what he protects every single day, and why he believes the mouth is the most underestimated entry point in the longevity toolkit.
Why the Oral Microbiome Is the Missing Piece in the Nitric Oxide Conversation
When most people think about Nitric Oxide, they think about the cardiovascular system. What they don't realize is that a critical part of NO production runs directly through the mouth.
The nitrate-to-nitric-oxide pathway depends on bacteria that live on the tongue. These microbes convert dietary nitrates, found in leafy greens, beets, and other whole foods, into nitrite, which the body then converts into Nitric Oxide. Disrupt those bacteria, and you disrupt the pipeline.
This is exactly what antibacterial mouthwash does. It doesn't selectively target harmful bacteria. It wipes out the entire oral microbiome, including the bacteria that keep Nitric Oxide production running. The same goes for mouth breathing, which bypasses the nasal passages that generate Nitric Oxide in the sinuses and deliver it directly to the lungs with every breath.
Layer environmental toxins on top, heavy metals, endocrine disruptors, electromagnetic exposure, and the burden on the vascular system compounds further.
Dr. Magarinos's work lives at that intersection. And his approach to Nitric Oxide support reflects it entirely.
Flow Well Q&A with Dr. Haroldo Magarinos
1. What does whole-body health mean to you?
"It means treating the body as one connected system rather than a set of isolated parts. In my world, that connection is obvious: the mouth, gut, liver, and blood vessels are in constant conversation, and a disturbance in one shows up in the others. It also extends outward, to the environment you live in - the toxins in it, the electromagnetic fields, the noise. Whole-body health is the internal and environmental balance that lets every system perform optimally, in an integrated way."
2. What types of movement are most beneficial for improving blood flow?
"Anything that puts sustained shear stress on the vessel walls. Brisk walking and zone 2 cardio are the daily workhorses, and resistance training adds a strong stimulus, because blood moving across the vessel lining is the signal that tells it to produce nitric oxide."
3. What are your non-negotiable daily habits for longevity?
"Waking up to morning sunlight, choosing the cleanest options I can for my water and food, active Detox support, which I do through the novel approach I created with DetoxU products, and moving every single day. Mindful eating matters too — not just what I eat, but how I eat. I make sure I have enough time and the right setting to actually sit with a meal; I'd rather skip one than eat on the run."
4. What's your favorite "low effort, high impact" health upgrade?
"Stop using antibacterial mouthwash and start breathing through your nose. Both cost almost nothing, take no extra time, and directly protect nitric oxide. Few things return that much for that little effort."
5. What is your favorite Berkeley Life product? How do you use it?
"The Nitric Oxide Support paired with the test strips. I take two capsules in the morning after food and use the saliva strips to check my baseline and confirm the response about 90 minutes later — I like that you can actually measure whether it's working instead of guessing. As someone who works in the oral microbiome, I'm also drawn to the prebiotic gum, since it supports the exact tongue bacteria that keep the nitrate-to-nitric-oxide pathway running."
About DetoxU
Dr. Magarinos's clinical work extends beyond Nitric Oxide into a broader framework for reducing the environmental and toxic burden that quietly undermines vascular, metabolic, and cellular health over time. DetoxU is the platform he built to make that work accessible — a science-grounded approach to whole-body detoxification that complements everything he does around circulation and oral-systemic health.
To learn more, visit DetoxU.
Watch: Berkeley Life x DetoxU Webinar
Dr. Magarinos recently joined Berkeley Life for a live conversation covering the oral microbiome, Nitric Oxide, environmental health, and what a whole-body detox approach actually looks like in practice. It's one of the most practical and wide-ranging conversations we've had on the connection between toxic load and vascular function.
Shop Dr. Magarinos's Nitric Oxide Routine
Supporting the NO pathway starts at the mouth — and goes all the way through.
Nitric Oxide Support — Dr. Magarinos's daily capsule for foundational Nitric Oxide Support. Practitioner-recommended, clinically designed.
NO Test Strips — Know your baseline. Track your response. Take the guesswork out entirely.
Balance Prebiotic Gum — Supports the oral bacteria at the heart of the nitrate-to-NO pathway.
About the Flow Well Series
Flow Well is Berkeley Life's community spotlight series featuring practitioners, researchers, and health leaders who are rethinking what it means to age well. Because the goal isn't just a longer life — it's a body that keeps showing up for you.
