The 3 Hidden Hormones That Cause Stubborn Weight and Menopausal Fatigue
- Koree L. Thatcher, BCHPT, HPMC, COSA

- Nov 26, 2025
- 2 min read

Why You’re Feeling Stuck: It’s Not Just Estrogen
You're doing everything right—eating clean, trying to stay active—yet you’re constantly tired, and the scale won't budge. If you're navigating perimenopause or menopause, you know that declining Estrogen is often blamed.
But the truth is, stubborn weight gain and persistent fatigue are often driven by imbalances in three other critical hormones that are highly sensitive to stress, diet, and detoxification. These are the "hidden" players we focus on at THATCHER LYNN Salon & Wellness.
1. Insulin: The Storage Hormone
We often think of insulin only in relation to diabetes, but it's the master Storage Hormone that determines whether your body burns fat or holds onto it.
The Problem: The natural decline in estrogen during menopause reduces your body's sensitivity to insulin. This means your cells resist taking in glucose, leaving more sugar in the bloodstream. The body overproduces insulin to compensate, and high, constant insulin levels signal your body to stop burning fat and start storing it—especially around the midsection.
The Fatigue Link: When insulin is constantly high, your energy crashes after meals, leaving you with that mid-day slump often confused with menopausal fatigue.
2. Cortisol: The Stress Hormone
Cortisol is your body's alarm system, designed to get you through acute stress. Unfortunately, modern life keeps the alarm ringing constantly.
The Problem: Chronic stress from work, family, or even dieting keeps Cortisol levels perpetually high. High Cortisol directly interferes with Thyroid hormones (your metabolism regulator) and disrupts Progesterone (your calm hormone).
The Fatigue Link: This constant state of alert exhausts your adrenal glands, leading to adrenal fatigue symptoms, where you wake up tired and struggle to stay awake throughout the day.
The Weight Link: Cortisol signals the body to store fat for "emergency fuel," especially visceral fat deep in the abdomen.
3. T3 (Active Thyroid Hormone): The Regulator
Your Thyroid hormones are the master regulators of your metabolism and energy production in nearly every cell in your body.
The Problem: Low levels of the active hormone, T3, put the brakes on your internal engine. The tricky part is that optimal T3 requires key nutrients like Selenium and excellent liver function (where much of the T3 conversion happens).
The Fatigue Link: Low T3 causes the classic signs of hypothyroidism: persistent fatigue, brain fog, and cold sensitivity, all of which worsen menopausal exhaustion.
The Weight Link: A sluggish metabolism means fewer calories are burned at rest, making weight gain—even without changes in diet—almost inevitable.
Ready to Reset Your Regulators?
At THATCHER LYNN Salon & Wellness, we focus on functional solutions—not just masking symptoms. We use tools like the Hair Tissue Mineral Analysis (HTMA) to identify deficiencies (like Selenium) and burdens (like toxins) that are stressing your liver and sabotaging your hormone regulators (Insulin, Cortisol, and Thyroid).
We bridge the gap between your hormones and your health so you can get back to feeling confident and energetic.
Ready to stop guessing and start healing?
Be Well,
Koree L. Thatcher



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