A conversation with Dr. Carolyn Dean, MD, ND — author, researcher, and the scientist who spent 50 years following one mineral all the way to longevity.
Here’s something worth sitting with for a moment.
You’re probably deficient in magnesium right now. So is your partner. So are most of your friends. According to Dr Carolyn Dean, who has spent more than five decades researching this, approximately 80% of people are walking around magnesium-deficient, running every system in their bodies at a disadvantage, and nobody has told them.
Not their doctor. Not their specialist. Definitely not the supplement brand selling them collagen and creatine.
In our conversation on the Rebellious Wellness Lifestyle Podcast, Dr. Dean, who holds degrees in medicine, naturopathy, Chinese herbal medicine, and nutrition, laid out a case so compelling I found myself mentally cataloging every symptom I’ve brushed off over the years. Headaches? Magnesium. Heart palpitations? Magnesium. Muscle cramps? Eye twitching? Choking on pills? That was her list — from her own life — before she started seriously addressing her deficiency.
She was still high-functioning. Pushing through. Sound familiar?
You can also listen to the audio here. Also available on Spotify and Apple
Prefer reading? Get the episode transcript here:
Why Magnesium Is the One Thing Most People Are Getting Wrong
Here’s the number that stopped me: magnesium is required for 600 to 800 enzyme processes in the human body. Not the 300 that keeps getting cited everywhere. Six hundred to eight hundred. And yet our daily intake from food has dropped from roughly 500 mg a century ago to maybe 200 mg today, thanks to soil depletion and how far our food has traveled from the ground to our plates.
We need 500 to 600 mg. We’re getting less than half that.
The implications ripple outward. Magnesium is the central cofactor in ATP production — adenosine triphosphate, your body’s energy currency. The chemical structure of ATP is literally Mg-ATP. You do not make energy without magnesium. Your brain neurons contain two million mitochondria. Your heart cells contain 5,000. All of them are producing ATP in Krebs cycles that require magnesium. When Dr. Dean connects the dots between low magnesium and rising rates of dementia, Alzheimer’s, and Parkinson’s, she’s not speculating. She’s following the biochemistry.
“When I hear people talking about mitochondria this and mitochondria that, and they don’t talk about magnesium, they are totally missing the boat.” — Dr. Carolyn Dean
The Biohacking Trap (And Why the Supplement Aisle Is Full of Distraction)
Dr. Dean has been watching the supplement industry with a kind of resigned amusement. Creatine. Collagen. Ashwagandha. NAC. Endless biohacking supplements being used to treat what she considers downstream symptoms of magnesium deficiency.
“If you don’t have the basics on board, you can’t build anything above that,” she told me. And she’s right. You can take every trending longevity molecule on the market, but if your cells can’t produce energy because they’re starved of magnesium, you’re decorating a house with a crumbling foundation.
The cruel irony: the biohacking community largely gave up on magnesium because it causes digestive issues. So they moved on to everything else — everything except the thing that might actually have helped.
Not All Magnesium Is Created Equal — Here’s What Actually Gets Into Your Cells
If you’ve ever bought magnesium oxide at a pharmacy and wondered why it did nothing for you (or sent you running to the bathroom), Dr. Dean has an answer: only 2 to 4 percent of magnesium oxide actually gets absorbed. Most of what you took never made it to your cells.
The reason matters: all magnesium compounds have to disassociate into free magnesium ions in your bloodstream before they can pass through mineral ion channels into cells. The problem is that magnesium ions are extraordinarily reactive — they immediately want to bond to whatever is around them, including fluoride from your toothpaste and water. The window of availability is tiny.
This is the problem Dr. Dean spent 10 years solving. Working with a chemist, she developed a stabilized picometer-sized ionic magnesium — small enough to be absorbed directly, stable enough to stay in ionized form on a shelf for years. In a Purdue University study, 300 mg of this formula produced measurable increases in ionized magnesium in participants’ blood. The investigators ran the test three times because the results were so unexpected.
Her recommendation: add a teaspoon to a liter of water and drink it through the day. Steady, consistent cellular absorption — no laxative effect, no dramatic dosing.
The Maui Study That Should Be Bigger News
This is the part of our conversation I keep coming back to.
Last year, Dr. Dean ran a six-month study on 10 participants in Maui. She put them on seven of her formulas — magnesium, a multi-mineral, vitamin D3/K2, zinc, copper, and vitamin C. Before and after, participants underwent epigenetic methylation testing through True Diagnostic, a lab that correlates DNA methylation patterns with biological aging.
Within the first couple of months, she said, something visible started happening. People’s faces lost their puffiness. Their moods shifted. They started reducing medications.
At six months, symptoms had dropped 50 to 75 percent. And seven of the ten participants showed an average of four years of biological age reversal.
Four years. In six months.
For context, the COSMOS study — one of the largest supplement trials conducted, following 1,000 people on Centrum Silver for two years — reported an average of four months of slowed aging. Dr. Dean’s participants achieved four years in a quarter of the time.
She’s clear that this was a small pilot study, not a randomized controlled trial. But the direction is undeniable, and she’s working on publishing the full results at drcarolyndean.com.
Cholesterol, Heart Disease, and the Study on Vegetarian Rabbits That Changed Medicine
I asked Dr. Dean about cholesterol — partly because it’s everywhere right now, and partly because I know women in their 60s being told to get their LDL below 50. She went back to the origin story.
In the 1950s, the sugar industry was facing evidence that sugar caused heart disease. Their solution: fund and amplify a study on rabbits that showed feeding rancid cholesterol to animals caused atherosclerosis. Never mind that rabbits are herbivores. Never mind that the cholesterol was rancid. The fat-equals-heart-disease narrative took off, and 60 years of statin prescriptions followed.
Dr. Dean offers a mechanistically cleaner explanation: without enough vitamin C, artery walls weaken and develop micro-tears. Cholesterol shows up as a patch. Without enough magnesium, calcium precipitates onto that patch. That’s atherosclerosis. It’s not the cholesterol causing the problem — it’s what the cholesterol is responding to.
Linus Pauling’s most important work, she reminded me, was on heart disease, not the common cold. He argued that humans — one of the few species that cannot synthesize vitamin C — likely need 5,000 to 10,000 mg daily. We’re getting a fraction of that, and we’re paying for it in arterial health.
“Cholesterol comes on and slaps itself on the tear as a Band-Aid to try to help the process. And then if you’re magnesium deficient, calcium will precipitate on the cholesterol. That’s heart disease right there.” — Dr. Carolyn Dean
The Sugar-Vitamin C Interaction Nobody Talks About
Dr. Dean saved what might be the most counterintuitive point for last: vitamin C and glucose compete for the same transporter into cells. Both depend on insulin to carry them across the membrane. When blood sugar is elevated — even from two teaspoons or more — glucose wins the competition. Vitamin C gets left outside.
Vitamin C that can’t enter cells can’t function as an antioxidant. Can’t support collagen synthesis. Can’t do any of its jobs. A high-sugar diet is, in practical terms, a functional vitamin C deficiency — regardless of how much C you’re consuming.
“The sugar industry doesn’t want you to know that,” Dr. Dean said.
She’s right. It’s an inconvenient piece of biochemistry.
A Note on Vitamin D (And Why Taking It Without Magnesium May Be Hurting You)
This gets almost no attention, and it should. Vitamin D requires magnesium to be activated in the body. When doctors prescribe 50,000 IU doses of vitamin D — which is standard practice — that dose will pull whatever magnesium reserves you have. People who start feeling worse after beginning a vitamin D protocol may not be responding badly to vitamin D. They may be experiencing iatrogenic magnesium depletion.
Dr. Dean is direct about this: if you’re going to take vitamin D, you have to take it with magnesium. Otherwise the prescription may be creating the very deficiency it’s positioned around.
The Starting Point She Recommends
I asked Dr. Dean where someone should start if they want to put foundations in place. Her answer was practical and unglamorous:
- Add a quarter teaspoon of colorful sea salt to a liter of water — you’ll get 72 trace minerals.
- Start with magnesium. She uses 300 mg of her ionic ReMag in daily water.
- Add a multi-mineral that covers boron, copper, zinc, molybdenum, selenium, and chromium.
- Add vitamin D3/K2 — but always paired with magnesium.
- Check your potassium if symptoms overlap with magnesium deficiency, or if you’re avoiding vegetables.
- Take vitamin C in meaningful amounts. The RDA was set to prevent scurvy, not to support health.
“Magnesium first,” she said on one of her recent YouTube streams, “and probably magnesium last.” Everything else is built on that foundation.
What I Took Away From This Conversation
I’m 70. Dr. Dean is 77. She says she feels better now than she did in her 30s, when she was symptomatic but high-functioning enough not to connect the dots.
That’s the phrase that stayed with me: high-functioning but symptomatic. It describes so many of the women I know. Managing. Pushing through. Assuming that the low-grade fatigue and the brain fog and the muscle tension are just part of the deal at this age.
They’re not. Or at least, they don’t have to be. The research Dr. Dean has spent her career building — and the study results she’s about to publish — suggest that the body has a remarkable capacity to recalibrate when you give it what it actually needs.
That’s not a wellness cliché. That’s biochemistry. And it starts with magnesium.
Resources Mentioned
- drcarolyndean.com — educational content, newsletters, live streams (Mondays 7 PM Eastern)
- rnareset.com — Dr. Dean’s supplement store (ReMag, ReMyte, Pico Silver, Pico Potassium)
- The Magnesium Miracle (updated edition) — condition-indexed reference with 68 magnesium-deficiency conditions
- True Diagnostic — epigenetic methylation testing lab used in the Maui Reset Study
Listen to the full episode above. And if this changed how you think about mineral foundations, share it — and tell us what you’re going to do differently.
About the Host
I, Greg Cox, have been working in the wellness space for 20+ years and was a chef for 25 years before that, often creating health meals for restaurants and as a private chef. I created the Rebellious Wellness Lifestyle Podcast to empower women to challenge the limitations society places on them as they age.
I believe in science without outsourcing intuition, in prevention over treatment, and in the radical act of remaining visible, engaged, and fully expressed at every age.
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