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Back to Natural Health Dr. Robert Selig designs 100% natural therapeutic regimens customized around a patient's specific biochemistry.

Dr. Robert Selig, DC - Functional Medicine Practitioner and hair tissue mineral analysis expert - offers customized care plan packages to address chronic health issues affecting most of the population like mineral deficiency, fatigue, and copper toxicity. Blood tests do not provide enough information to properly address chronic health problems because they do not accurately measure deficiencies an

d toxicities at the root of all illness which is why we test our patients using serial hair tissue mineral analysis (HTMAs). Our mission is to identify, address, and manage chronic health problems in our patients using

Using HTMA helps us get to the root of chronic health problems in order to properly identify needs and address any deficiencies or toxicities. HTMA has been discovered to be the only test available that can accurately measure what is happening inside the cells, not just the blood. To properly address any issues, we give our patients the best nutritional medicine from around the world, and in conjunction, we employ time-tested natural healing methods to improve the efficiency and speed of the recovery process. Our approach has proven to significantly improve wellness, health, and vitality in adult and child patients without the use of expensive drugs and invasive medical procedures. Our goal is to help patients age gracefully and naturally—and avoiding unnecessary dangerous surgeries and future hospital visits. Dr. Selig explains to patients the CRITICAL importance of improving the inner gut terrain, following detoxification protocols, and enhancing the neuro-endocrine function by removing toxic metals in order to see improvement in overall mental, physical, and spiritual well-being. Patients receive invaluable natural health information to follow for the rest of their lives, and our most successful patients learn from Dr. Selig to create new natural healing habits tailored to their own lifestyle. Sign up for a free consultation to learn more at www.BackToNaturalHealth.com. We work with patients locally and worldwide—call with any questions at 773-325-2225 and book your appointment online!

Iron and copper have a natural affinity for oxygen, which makes them essential for human physiology, but that same affin...
05/22/2026

Iron and copper have a natural affinity for oxygen, which makes them essential for human physiology, but that same affinity becomes dangerous when these metals catalyze oxygen into hydroxyl radicals that drive chronic disease.

Because iron and copper overload are so widespread, I prescribe zinc far more often than copper and only use copper when mineral patterns specifically require it.

Iron overload contributes to arthritis, stroke, and heart attack, while copper accumulates in the liver and leads to fatty liver disease before moving to other tissues.

Taking high doses of copper based on blood tests alone ignores mineral patterns and leads to bioaccumulation and organ damage.

That is why iron and copper must be respected, not supplemented carelessly.

Dr. Robert Selig
BackToNaturalHealth.com

05/22/2026

Iron and copper have a natural affinity for oxygen, which makes them essential for human physiology.

The problem occurs when iron and copper catalyze oxygen into hydroxyl radicals, which then drive chronic disease.

Because iron and copper overload are so common, I prescribe zinc far more often than copper.

I only prescribe copper when mineral patterns specifically require it.

Iron overload contributes to arthritis, stroke, and heart attack, while copper accumulates in the liver and leads to fatty liver disease.

Taking high doses of copper based on blood tests alone ignores mineral patterns and leads to bioaccumulation and organ damage.

That is why iron and copper must be respected, not supplemented carelessly.

Dr. Robert Selig
BackToNaturalHealth.com

Watch the full video here: https://vist.ly/557ws

The human body contains between 2000 and 3000 milligrams of zinc distributed across all tissues and compartments, while ...
05/19/2026

The human body contains between 2000 and 3000 milligrams of zinc distributed across all tissues and compartments, while copper measures only 100 to 150 milligrams, creating a natural twenty to one ratio.

Ninety percent of total body zinc resides in muscle and bone, with sixty percent in skeletal muscle and thirty percent in the bony architecture including teeth.

The remaining ten percent of zinc is highly concentrated in the brain, kidneys, pancreas, liver, prostate, s***m, and eyes, where it plays critical roles in vision, fertility, and organ function.

S***m count remained stable throughout human history, yet in the last fifty to sixty years alone, it has dropped fifty percent across the population.

When that number reaches seventy percent, it will trigger a man-made human extinction event.

A world without zinc means nothing works, and you will not work without zinc.

Dr. Robert Selig
BackToNaturalHealth.com

05/19/2026

The human body holds 2000 to 3000 milligrams of zinc and only 100 to 150 milligrams of copper, a natural twenty to one ratio that reflects how much more zinc your systems require.

Ninety percent of total body zinc resides in muscle and bone, and the remaining ten percent concentrates in your tissues including your brain, kidneys, pancreas, liver, prostate, s***m, and eyes, where it plays critical roles in vision, fertility, and organ function.

S***m require high levels of zinc, which is why the fifty percent drop in s***m count over the last fifty years directly reflects widespread zinc deficiency.

That is not speculation. That is the trajectory we are on.

A world without zinc means nothing works, from fertility to vision to the basic chemistry of your organs.

Dr. Robert Selig
BackToNaturalHealth.com

Watch the full video here: https://vist.ly/54qiw

I have said for over twenty years that all roads lead to the liver, and this is especially true when we discuss zinc hom...
05/14/2026

I have said for over twenty years that all roads lead to the liver, and this is especially true when we discuss zinc homeostasis.

Alchemy is the oldest science known to mankind, predating chemistry, and it was always referred to as the royal science.

The great alchemists taught that every organ corresponds to a planet and every planet has a metal, with copper serving as the metal of Venus and its energy ruling the kidney–adrenal complex.

For the liver, the alchemists have always assigned Jupiter, the largest planet, to the largest internal organ, and the metal of Jupiter has traditionally been tin.

Here I respectfully disagree with thousands of years of alchemical tradition.

I believe a linguistic confusion arose because the German word for tin is Zinn, and the German word for zinc is Zink.

Etymological evidence suggests that Zink evolved from the same root as Zinn.

Tin has almost no significant biochemical role in human physiology outside of one or two obscure processes, while zinc is absolutely essential for liver function.

Numerous liver enzymes depend on zinc, making zinc homeostasis critical for hepatic health.

Therefore, zinc needs to be properly understood as the true metal of the liver, functioning as a higher octave of tin.

Dr. Robert Selig
BackToNaturalHealth.com

05/14/2026

All roads lead to the liver, especially when it comes to zinc homeostasis.

The great alchemists taught that every organ corresponds to a planet and a metal.

They assigned the metal tin to Jupiter and the liver.

However, tin has almost no meaningful role in human biochemistry.

I believe a linguistic confusion arose because the German word for tin is Zinn, and the German word for zinc is Zink.

Etymological evidence suggests that Zink evolved from the same root as Zinn.

Zinc is essential for countless liver enzymes and metabolic processes, and therefore it is best understood as the true metal of the liver, serving as a higher octave of tin.

This correction of alchemical tradition matters because we need to understand how important zinc is for liver health.

Dr. Robert Selig
BackToNaturalHealth.com

Watch the full video here: https://vist.ly/548cb

My favorite zinc-dependent enzyme is carbonic anhydrase, which stands as the most ancient enzyme in human physiology.Whe...
05/12/2026

My favorite zinc-dependent enzyme is carbonic anhydrase, which stands as the most ancient enzyme in human physiology.

When carbon dioxide diffuses into the bloodstream, it cannot remain there because it behaves like an acid and would alter blood pH outside the narrow window of 7.35 to 7.45.

The body deals with CO2 immediately through carbonic anhydrase, which combines CO2 with water to produce carbonic acid, a lesser acid that acts as a Trojan horse to enter the bloodstream.

Carbonic acid then travels to the kidneys, where it cleaves off hydrogen and leaves bicarbonate, the body's most important alkaline buffering system.

When carbonic acid reaches the stomach, it cleaves off hydrogen and leaves bicarbonate, which exchanges for chloride through an antiport channel, eventually producing hydrochloric acid.

Stomach acid serves as the first line of defense against microorganisms and enables absorption of calcium, magnesium, iron, and zinc.

Stomach acid also communicates with the pancreas and liver, triggering release of digestive enzymes and bile into the small intestine.

When carbonic acid finds its way to the lungs, it dissociates into CO2 and water, which is released as v***r and becomes food for trees and plants.

Carbonic anhydrase is not just an enzyme; it is a bridge between human biochemistry and the living planet.

Dr. Robert Selig
BackToNaturalHealth.com

05/12/2026

Carbonic anhydrase is the most ancient zinc dependent enzyme, and it manages carbon dioxide the moment it enters your bloodstream by converting it into carbonic acid.

That carbonic acid travels to your kidneys to become bicarbonate, your body's primary alkaline buffering system.

It travels to your stomach to become hydrochloric acid, which defends against microorganisms and enables mineral absorption.

It travels to your lungs to become CO2 and water v***r, which feeds trees and plants.

Carbonic anhydrase is not just an enzyme; it is a bridge between human biochemistry and the living planet.

Dr. Robert Selig
BackToNaturalHealth.com

Watch the full video here: https://vist.ly/53uqj

The World Health Organization reports that one third of the global population has a gross zinc deficiency, which amounts...
05/08/2026

The World Health Organization reports that one third of the global population has a gross zinc deficiency, which amounts to approximately two billion people.

This official statistic only accounts for severe deficiency, and when we learn how to assess for marginal or subtle zinc deficiency, it becomes clear that nearly everyone on planet Earth is deficient to some degree.

Poor immune function, weak digestive capacity, and a wide range of chronic conditions all point to inadequate zinc status across the population.

Zinc has become one of the most deficient minerals in agricultural soils worldwide.

When zinc is missing from the soil, it is missing from the plants grown in that soil, from the animals that eat those plants, and ultimately from the people who consume both.

This cascading deficiency means that across the board, modern humans are simply not getting enough zinc to support basic immune and digestive health.

Dr. Robert Selig
BackToNaturalHealth.com

05/08/2026

The World Health Organization estimates that two billion people have a severe zinc deficiency, but this only captures the most obvious cases.

When we assess for marginal or subtle zinc deficiency, it becomes clear that nearly everyone on the planet is deficient to some degree.

Poor immune function, weak digestion, and chronic disease all trace back to inadequate zinc status.

Zinc is now one of the most deficient minerals in agricultural soils, which means it is deficient in plants, animals, and the people who eat them.

Across the board, modern humans simply do not get enough zinc to support basic health.

Dr. Robert Selig
BackToNaturalHealth.com

Watch the full video here: https://vist.ly/53jub

Aldehydes are responsible for brain fog, headaches, and the flushing effect many people experience after certain exposur...
05/07/2026

Aldehydes are responsible for brain fog, headaches, and the flushing effect many people experience after certain exposures.

Walking through a department store perfume section or inhaling artificial fragrances often triggers a headache because those aldehydes are not being broken down at a fast enough rate.

This delayed breakdown may stem from zinc deficiency, a genetic enzyme mutation, or both, but zinc deficiency remains the most common factor.

The off-gassing from a new car can last more than a year, and the artificial fragrances in rideshare vehicles provide an additional source of aldehyde exposure.

Without adequate zinc, your body simply cannot clear these aldehydes efficiently, leaving the detoxification pathway sluggish and incomplete.

This persistent aldehyde accumulation explains why so many patients suffer from brain fog, as their zinc-dependent enzyme system cannot keep pace with daily environmental exposures.

Dr. Robert Selig
BackToNaturalHealth.com

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