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Episode 128 Health & Biology

Estrogen, Menopause, and the Fat-Burning Connection

Estrogen turns on fat burning via AMPK. This is why women historically live longer than men—and why menopause changes everything.

By Justin Hartfield 4:20 Health & Biology Updated December 22, 2025
Estrogen, Menopause, and the Fat-Burning Connection
Justin Hartfield

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Justin Hartfield

Founder of Weedmaps, student of Dr. Bob Melamede, and explorer of far-from-equilibrium systems. Connecting thermodynamics, consciousness, and human potential.

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Women have been lied to about menopause.

They're told it's just a natural transition, that the hot flashes and weight gain and mood swings are just something to endure. Pop some hormones if it gets too bad. Otherwise, tough it out.

But Dr. Bob Melamede showed me a different perspective—one rooted in thermodynamics and the endocannabinoid system.

The Estrogen-ECS Connection

Estrogen doesn't just regulate reproduction. It's deeply intertwined with the endocannabinoid system. Estrogen affects the expression of cannabinoid receptors and the enzymes that make and break down endocannabinoids.

When estrogen drops during menopause, the entire endocannabinoid system gets disrupted. This affects everything—mood, sleep, pain perception, inflammation, and crucially, metabolism.

The Metabolic Shift

Here's what's really happening: estrogen helps maintain metabolic flexibility—the ability to switch between burning glucose and burning fat. When estrogen drops, many women lose this flexibility. They get stuck in glucose-burning mode.

This is why menopausal women often gain weight even without changing their diet. Their bodies have lost the ability to efficiently access fat stores for energy. They're metabolically inflexible.

Infographic
Menopause isn't just about hormones—it's a metabolic shift that changes how your body stores and burns fat.

The endocannabinoid system is supposed to help regulate this metabolic switching. CB1 receptors are more associated with glucose metabolism and fat storage. CB2 receptors are more associated with fat burning and metabolic health. The balance matters.

A Different Approach

Instead of just replacing estrogen, what if we focused on supporting the endocannabinoid system directly? What if we helped restore metabolic flexibility through other means?

Exercise helps—it's one of the most powerful ways to boost endocannabinoid tone and improve metabolic flexibility. Fasting helps too. So does reducing chronic inflammation.

"Menopause isn't a disease to be treated—it's a metabolic transition that requires support."

The Forward-Looking approach to menopause isn't about fighting the transition. It's about supporting your body's ability to adapt to new hormonal realities. Work with the change, not against it.

This is true for all of life's transitions. The universe is constantly changing. Your body is constantly changing. The question is whether you'll adapt or resist. Thermodynamics always wins in the end.

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