Dr. Jay Wrigley, NMD · Root Cause Journal
Hormones, Metabolism & Longevity
Clinical insights on the hormonal patterns most doctors miss — written for patients who are done with generic answers.
Low Testosterone vs. the Testosterone–Insulin–Cortisol Loop: Why the Distinction Matters for Men Over 45
Low testosterone is real — but for many men over 45, the deeper issue is the testosterone–insulin–cortisol loop. Dr. Jay Wrigle...
May 14, 2026
Perimenopause Symptoms vs. Metabolic Pattern: Why the Distinction Changes the Approach
Perimenopause is a hormonal transition — but not every symptom in a woman over 40 is caused by perimenopause alone. Dr. Jay Wri...
May 14, 2026
Midlife Weight Gain Is Not Just Calories: Why the Hormonal Environment Changes Everything After 40
The calorie-in-calorie-out model is not wrong — but it is incomplete after 40. Dr. Jay Wrigley explains why the hormonal enviro...
May 14, 2026
LCHPMF™ vs. Keto After 40: What's the Difference and Which One Is Right for Your Pattern?
Both LCHPMF™ and ketogenic diets reduce carbohydrates — but they operate from fundamentally different frameworks. Dr. Jay Wrigl...
May 14, 2026
Hormone Assessment vs. Standard Lab Testing: Why Normal Results Don't Always Tell the Full Story
Standard lab testing and Dr. Jay Wrigley's free Hormone & Metabolism Assessment serve different purposes. Here's what each ...
May 14, 2026
Why High-Fat Keto Can Backfire After 40: The Cortisol, Thyroid, Estrogen, and Insulin Mechanisms
A deep clinical look at five specific mechanisms — cortisol amplification, thyroid conversion suppression, estrogen dominance, ...
May 14, 2026
Estrogen Dominance, Thyroid Conversion, and Weight Gain After 45
Weight gain after 45 is often not a calorie problem. Dr. Jay Wrigley explains how estrogen dominance, thyroid conversion failur...
May 14, 2026
Why Women Wake Up at 3 A.M. in Perimenopause
Waking at 3 a.m. in perimenopause is not random. Dr. Jay Wrigley explains the progesterone, cortisol, blood sugar, and estrogen...
May 14, 2026
Is Keto Still Right After 40? Why High-Fat Keto Can Backfire When the Hormonal Engine Changes
Keto works for some people — but for many adults over 40, high-fat ketogenic eating can backfire. Dr. Jay Wrigley explains the ...
May 14, 2026
Why Your Body Stops Responding After 40
You are doing everything right — but your body has stopped responding. Here is why the rules changed after 40, and what the LCH...
May 14, 2026
Why You Wake Up at 2–4AM After 40 (And What It Actually Means)
It is not just stress or aging. Your cortisol rhythm, blood sugar stability, hormonal signaling, and nervous system have all c...
May 01, 2026
The Cortisol Problem No One Explains After 40
Why your stress response itself has changed — and why the old "just relax" advice no longer works. Section 1: The Cortisol Pr...
May 01, 2026
What Natural Protocols Protect Muscle and Metabolism While On or Off GLP-1 Medications
In my thirty-plus years as a Functional Medicine doctor specializing in hormones and metabolism, I have never seen a medicati...
Apr 28, 2026
Midlife Body Changes After 40: Why Nothing Works
In my thirty-plus years of clinical practice as a Functional Medicine Doctor specializing in hormones and metabolism, I have sa...
Apr 28, 2026
LCHPMF Complete Guide: The Midlife Metabolic Framework
The definitive guide to LCHPMF—the metabolic framework designed for adults over 40 who need more than a standard diet to lose f...
Apr 10, 2026
Perimenopause Blueprint: Beyond Low Estrogen
Perimenopause involves more than estrogen. This clinical blueprint covers progesterone, cortisol, insulin, and the full hormona...
Apr 10, 2026
Cortisol Dysregulation: Hidden Driver of Midlife Fatigue
Chronic cortisol dysregulation drives fatigue, belly fat, and poor sleep in midlife. Here's how to identify and correct it clin...
Apr 10, 2026
Andropause: Testosterone Decline Most Doctors Miss
Low testosterone in men over 40 is real and underdiagnosed. Learn the symptoms, lab markers, and clinical strategies for androp...
Apr 10, 2026
Perimenopause: The Real Hormonal Cascade Explained
Perimenopause isn't just low estrogen. Discover the full hormonal cascade—progesterone, cortisol, insulin resistance—and how to...
Apr 10, 2026
Cortisol Burnout: Exhaustion, Belly Fat & Brain Fog
Cortisol burnout creates a specific pattern: wired but tired, belly fat, poor sleep, and brain fog. Here's how to identify and ...
Apr 10, 2026
14 Hormone Patterns Doctors Miss in Midlife | Dr. Jay
Most doctors test for one or two hormones. Dr. Jay identifies 14 distinct midlife hormone patterns that explain why you still f...
Apr 10, 2026
Normal Labs, Still Feel Terrible? Here's Why
Lab results look normal but you feel exhausted, foggy, and stuck? Learn the clinical reasons standard labs miss functional horm...
Apr 10, 2026
Midlife Hormonal Cascade: Estrogen, Progesterone & More
What really happens to estrogen, progesterone, and testosterone in midlife? A clinical breakdown of the hormonal cascade and it...
Apr 01, 2026
Your Metabolism Isn't Broken—It's Hormonally Reprogrammed
Your metabolism didn't break—it was reprogrammed by hormones. Learn why fat loss stalls after 40 and the clinical strategy to r...
Apr 01, 2026
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