From the Desk of Carolyn Dean MD ND
Your cholesterol panel tells you about your lipids, but it says nothing about your heart’s rhythm.
As we head toward September and both National Cholesterol Education Month and AFib Awareness Month, I want to talk about something I think gets overlooked in the way we discuss heart health.
Most people who’ve had the tests done are familiar with the numbers: cholesterol, LDL, HDL, triglycerides, blood pressure. You get your lab results, look at whether you’re “in range,” and use those numbers to decide whether you’re doing enough for your cardiovascular health.
Your cholesterol panel tells you about the fats circulating in your blood. Meanwhile, your blood pressure reading tells you how much pressure your blood is putting on your artery walls. Both are important pieces of cardiovascular information, but neither tells you how steadily your heart is beating.
The numbers don’t tell the whole heart story.
One of the most important conversations happening inside your heart isn’t about cholesterol at all. Instead, it’s about electrical rhythm—the carefully coordinated sequence of signals that allows your heart muscle to contract and relax in a steady pattern.
And that conversation brings us into an area I’ve spent decades studying: minerals for heart rhythm.
In particular, I want you to consider what is happening at the cellular level and understand the relationship between magnesium, potassium, and calcium. Your heart doesn’t use these minerals independently. It relies on their balance.
That distinction matters because you can have a cholesterol panel that looks reassuring and still have a completely different question to ask about your heart:
What is supporting the electrical stability of those heart cells?
Two Different Heart Health Conversations
When I talk about minerals and cardiovascular health, I don’t want to confuse two very different subjects.
My July discussion about cardio was about endurance—what your body needs when you’re walking, running, cycling, swimming, or otherwise asking your cardiovascular system to work harder. We talked about sweat, hydration, minerals, and the demands of exercise.
This is different.
Today I’m talking about rhythm and steadiness.
A cholesterol panel measures lipids circulating in your blood. It can tell you about cholesterol and triglyceride levels, but it doesn’t measure the electrical activity responsible for keeping your heartbeat coordinated.
Your blood pressure reading tells you something else again: the pressure generated as blood moves through your vessels.
Think of your heart as having both an engine and an electrical system. You can evaluate certain aspects of the engine through conventional cardiovascular measurements. However, the electrical system has its own set of signals and requirements.
Looking at one doesn’t automatically tell you what’s happening with the other.
All of these measurements can be useful pieces of your health picture. But none of them tell you what is happening with the mineral balance inside the individual cells of your heart.
That’s where I think we need to widen the conversation.
How Minerals for Heart Rhythm Work Together
Your heart is an electrical organ as much as it is a muscular one.
Every heartbeat depends on carefully controlled movement of minerals across cell membranes. As a result, these movements help create the electrical signals that tell heart muscle when to contract and when to relax.
This is why I don’t like looking at magnesium, potassium, or calcium as isolated nutrients.
The balance among them is what matters.
Magnesium, for example, works in relationship with calcium and potassium in the electrical activity of muscle cells. Calcium helps initiate contraction, while magnesium helps regulate calcium’s activity.
Meanwhile, potassium is fundamental to the electrical charge across cell membranes. Together, these minerals for heart rhythm help create the conditions for normal muscle and nerve function—including the specialized muscle tissue of the heart.
In my discussion of heart health in Total Body ReSet for Women: Avoiding Total Body Meltdown, I’ve paid particular attention to the relationship between magnesium and calcium.
When magnesium is inadequate relative to calcium, I believe that imbalance can contribute to symptoms involving cardiovascular function. This is one reason I have written about magnesium in connection with symptoms such as angina and elevated blood pressure.
AFib and the Mineral Question
Atrial fibrillation, or AFib, is the most commonly diagnosed cardiac arrhythmia, and we’re hearing about it more and more.
Part of that increase may be because we’re getting better at detecting rhythm disturbances. For example, wearable devices can identify irregular patterns people might never have noticed on their own.
That technology is valuable.
Finding a rhythm abnormality gives someone an opportunity to have it evaluated.
However, it also raises a question I have been asking for years and wrote about in Magnesium: The Missing Link to Total Health:
What is happening with the electrolytes?
From my clinical perspective, electrolyte imbalance is an important piece of the AFib conversation. But here’s where trying to determine what the heart needs and what the heart has is completely sidelined by the fact that allopathic medicine doesn’t measure magnesium in the blood.
Let me say that again—your standard electrolyte blood panel does not have a place to put magnesium!
So, how in the name of glory are you going to know what your electrolyte balance is and when you need to take magnesium?
You have no idea what’s circulating in your bloodstream for your cells to have magnesium to do its many jobs.
Have I mentioned that magnesium is necessary for the function of 600–800 enzyme systems and 80% of known metabolic functions—including heart function!
The Challenge of Magnesium Testing
Let me explain more about magnesium testing.
The magnesium measured in standard blood serum testing represents only 1% of the body’s total magnesium. Therefore, a “normal” serum magnesium result can create a false reassurance when the body’s cellular magnesium status is not being adequately assessed.
I’m not suggesting that every person with AFib simply has a magnesium deficiency.
Heart rhythm disturbances have many possible causes, and AFib deserves proper medical assessment.
What I am saying is that mineral status belongs in the conversation, particularly when we’re talking about the electrical stability of heart muscle.
The Surgical Study That Caught My Attention
One reason I’ve continued to emphasize this relationship is the clinical research looking at magnesium around cardiac surgery.
Researchers have studied magnesium supplementation in people undergoing coronary artery bypass grafting, including its use during the pre-operative and early post-operative period.
Some of this research found a reduction in post-operative AFib among patients receiving magnesium.
In addition, there have been comparisons between magnesium sulfate and medications such as diltiazem in the setting of restoring normal rhythm after bypass surgery.
In the particular research I discuss in my work, magnesium showed a notably higher rate of successful rhythm restoration in that comparison.
I think studies like these are worth paying attention to because they remind us that minerals aren’t simply something we associate with bones or muscle cramps.
Magnesium is an active participant in the electrical physiology of the body.
At the same time, one clinical study doesn’t mean magnesium is a universal answer to every rhythm problem. That’s not how science works, and it isn’t how I analyze patient care.
What it does mean is that magnesium deserves a seat at the table when we’re talking about the mineral requirements of a healthy heart.
What This Doesn’t Mean
I want to be especially clear about this because heart rhythm is not an area where I would ever encourage someone to experiment with their medical care on their own.
If you’ve been diagnosed with AFib, an arrhythmia, high blood pressure, or another cardiovascular condition, please work with your physician or cardiologist.
Continue prescribed medications as directed. In addition, don’t stop or change medication because you’ve read about magnesium or another mineral.
I do not tell people to stop their prescribed medications. Likewise, I don’t discourage people from discussing procedures such as catheter ablation with their physician when that is appropriate.
Nutrition and mineral support belong alongside good medical care—not in place of it.
That’s actually the philosophy I want to emphasize here.
We don’t have to choose between modern cardiovascular medicine and nutritional support. Instead, we can use the information from both and take advantage of both.
Your cholesterol test gives you one piece of information. Your blood pressure gives you another. An ECG or rhythm monitor gives you another. Finally, your nutritional status adds another layer.
The goal is not to replace one with another.
It’s to see the whole picture.
Where Does a Daily Mineral Baseline Fit?
This brings me back to something I have said throughout my work: I would much rather support the body’s mineral foundation consistently than wait until a problem appears and then wonder what nutritional pieces might have been missing.
That doesn’t mean taking enormous quantities of individual minerals.
In fact, I have always been interested in the question of form, balance, and absorption—not simply dosage.
The heart needs magnesium, potassium, and calcium in relationship with one another. It also needs many other nutrients involved in normal cellular function.
That’s why a broad-spectrum mineral approach makes more sense to me than focusing exclusively on one isolated nutrient.
This is part of the thinking behind ReMyte, my 12-mineral, stabilized ion formula. It provides magnesium, potassium, calcium, and other minerals together as part of a daily mineral foundation.
I don’t think of ReMyte as a treatment for AFib or any other heart condition.
Instead, I think of it as nutritional support for the cellular mineral environment in which normal heart function takes place.
And that’s an important distinction.
Look Beyond the Numbers for a Healthy Heart Rhythm
I encourage you to keep getting the screenings and measurements that are appropriate for you.
Know your cholesterol. Know your blood pressure. Likewise, pay attention to changes in your heart rate or rhythm and discuss any concerns with your healthcare professional.
But don’t let a handful of numbers convince you that they tell the entire story because, as I’ve said, some very important numbers are missing!
I’ve spent much of my career reminding people that the body is interconnected.
A mineral that participates in muscle function is also participating in the function of your heart. Similarly, a nutrient involved in cellular energy is not limited to one organ. And an electrical system as sophisticated as the heart depends on the right mineral environment to function normally.
Your heart is a living, electrical, muscular organ—and it needs a mineral foundation to support all of that work.
If you want to explore that foundation, ReMyte is designed to provide a broad spectrum of ionic minerals as part of a daily nutritional routine.
Think of it not as an alternative to heart screening, but as another piece of the picture.
Ultimately, supporting minerals for heart rhythm means looking beyond cholesterol and considering the nutritional foundation that supports your heart’s everyday work.
Support your heart’s rhythm, not just your numbers.
This content is for educational purposes only and discusses nutritional and lifestyle support for normal structure and function of the body. It is not intended to diagnose, treat, or cure disease. Consult a qualified healthcare professional for personal medical guidance.
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