The TRUTH About What's *Really* Causing Your Fatigue & The "Root Cause" Protocol to Fix It, With Morley Robbins.
Ben Greenfield
Nov 22, 2025
Mindsip insights from this episode:
Consume animal fat to enhance copper bioavailability
You must consume animal-based vitamin A (retinol), found in fats, to activate the pumps that make copper bioavailable in your body.
Address copper loss in ceruloplasmin to regulate iron
The vital copper-carrying protein ceruloplasmin has been steadily losing its copper atoms over the past 70 years, diminishing its ability to regulate iron.
Reduce iron accumulation to slow aging process
The process of aging can be simplified to the accumulation of iron in your body's tissues over time, causing an internal 'rusting'.
Avoid high doses of vitamin C, D, and zinc to preserve copper levels
Taking high doses of ascorbic acid (vitamin C), vitamin D, and zinc together creates a perfect triad for destroying the bioavailability of copper.
Address copper deficiency to manage cholesterol levels
A lack of copper can cause cholesterol to rise, as the body produces more cholesterol to act as a protective sink for oxygen.
Reduce glyphosate use to preserve food's copper content
The herbicide glyphosate removes copper from soil a billion times faster than calcium, drastically reducing its presence in our food supply.
Manage chronic stress to prevent hidden iron deficiency
Chronic stress increases the hormone hepcidin, which sequesters iron in your tissues and makes blood levels appear deceptively low.
Recognize limitations of anemia blood tests for accurate iron assessment
Standard blood tests for iron can be misleading because there is up to 10 times more iron stored in your tissues than is circulating in your blood.
Avoid fortified foods with carcinogenic iron filings
The nine forms of inorganic iron filings used to fortify foods like wheat flour in the US have all been classified as carcinogens.
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