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Doc's Opinion is a a website containing articles and blog about health, nutrition, healthy lifestyle and disease prevention.

27/02/2026

I’ve been writing more regularly on Substack.

Essays on medicine.
On uncertainty.
And the stories we tell ourselves about health.

If you’d like them in your inbox rather than finding them by accident, you can subscribe here.

No noise. Just writing.

A cardiologist in Reykjavík, writing about health, and what drifts in at the edges. Click to read Axel F Sigurdsson MD, PhD, a Substack with hundreds of subscribers.

16/02/2026

A Nobel laureate who said cancer begins with a failure of cells to breathe.

A scientist of Jewish descent who survived N**i Germany while others did not.

Otto Warburg was brilliant, arrogant, and dangerously certain he was right.

For decades, his ideas were dismissed.
Now they’re back.

This is a story about cancer, silence, ambition, and what it costs to survive.

A narrative exploration of Otto Warburg, the Warburg effect, cancer metabolism, and the moral ambiguities of science under N**i Germany.

06/02/2026

For about a year now, I’ve been writing a series called The Heart of Power — essays about illness, medicine, and leadership at the highest level.

This is the 12th episode.

Along the way, I’ve written about presidents such as FDR, JFK, Eisenhower, LBJ, Reagan, and Nixon. I’ve also gone deeper into the medical shadows around power, including the roles of George Burkley, physician to both JFK and LBJ, and the strange, revealing interplay between Marilyn Monroe and John F. Kennedy.

The newest piece turns to Ronald Reagan.

Not the letter.
Not the ending.

But the years before, and the early, quiet signs of Alzheimer’s disease that unfolded inside a system designed to keep functioning.

It’s about memory, performance, and how power adapts long before it admits vulnerability.

The Quietest Crisis is now live on DocsOpinion.

A narrative nonfiction analysis of Ronald Reagan’s Alzheimer’s disease, exploring how memory, power, and performance separated without collapse.

12/01/2026

Seven episodes of The Metabolic Web are now live.

This series isn’t about what to eat. It’s about how energy moves — how it’s captured, stored, rerouted, and eventually mismanaged in modern disease.

We’ve reached the point where storage gives way to circulation, and biochemistry begins to show up in the blood.

If you’re curious about why metabolism breaks before disease appears, this is where it starts to come together.

An Introduction to the 19 Lessons in Metabolic Health

13/12/2025

Insulin isn’t about sugar.
It’s about abundance.

Part IV of The Metabolic Web is live:
Insulin - The Governor of Abundance.

The Metabolic Web has taken us from chemistry to power.

11/12/2025

Mrs. Alvarez has six doctors… and still no one who sees the whole picture.
Fragmented care is one of the quiet harms in modern medicine — and we almost never name it.

Here’s her story.

A website dedicated to health and nutrition, focusing primarily on healthy lifestyle and prevention of disease. Written by an experienced doctor and cardiologist.

02/12/2025

New article today: The Statin Empire — And What Now?

Statins saved lives, but they also reshaped prevention around a single surrogate. Now, the cracks are visible, the drift is undeniable, and new therapies are on the horizon.
This is a story about breakthroughs, blind spots, and the next frontier in heart disease.

From a Tokyo laboratory to modern cardiology wards, this essay traces the rise of the statin empire—and the lessons it left for the future of prevention.

01/12/2025

Yesterday I published Episode 2 of The Metabolic Web: Engines of Life.
It traces the moment mitochondria entered the story — the quiet merger that let cells harness oxygen, build complexity, and inherit a lifelong burden of repair.
A short read with long echoes.

How a single merger reshaped the fate of every living thing.

27/11/2025

The Spark is out.
It’s the opening chapter of The Metabolic Web, my new series on how energy shapes life — and how its failures shape disease.
If you want the deeper story behind metabolism and modern health, start here.

Where life begins, and how energy becomes order

25/11/2025

If you know a man around fifty who looks a little more tense than he used to — a little more tired, a little more inward — he’s not alone.

Many men feel “off” at midlife without knowing why.
They don’t complain.
They don’t talk about it.
But the body always tells a quiet story.

This new piece tries to describe that story.

Many men feel “off” at fifty without clear symptoms. This article explains the hidden physiology, stress, and disconnection that quietly shape midlife heart health.

20/11/2025

Inside the Artery - The 13 Steps of Atherosclerosis is now complete. Thirteen steps, from the first endothelial whisper to the final moment the blood turns against itself.

If you’ve been following the journey, this is the full map. If not, this is the perfect time to start.

All 13 chapters are now published — and linked here in one place.

A new series on how heart disease really happens — and how to stop it before it starts

18/11/2025

We think we know the story of JFK and Marilyn Monroe.
But the truth is quieter, stranger, and far more revealing than the myth that survived them.

Episode 11 of The Heart of Power is out now:
JFK, Marilyn, and the Myth We Never Let Go.

A gripping narrative of JFK and Marilyn Monroe—two icons held up by illusion, medicine, and pressure. A story of fragility behind American glamour.

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