Thread by @Dr_Biohacker

You don’t have a belly fat problem.

You have a cortisol problem.

You feel wired but tired, gain belly fat even when you’re dieting, sleep poorly, and feel stressed.

Here’s what cortisol does (& how to fix it):🧵

Cortisol is your body’s main stress hormone.

When used well:
• Wake you up
• Fight inflammation
• Mobilize energy
• Survive short-term stress

When chronically elevated:
• Destroys your sleep
• Drives belly fat
• Breaks down muscle
• Wrecks your mood

High cortisol traps your body into fat-gain mode.

When cortisol stays high:
• Belly fat grows faster
• Cells become more reactive to stress
• Insulin pushes more fat into storage

Visceral fat around your belly has more cortisol receptors than other fat.

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What high cortisol does to your body over time:

• Raises blood sugar
• Causes insulin resistance
• Shrinks muscle tissue
• Disrupts deep sleep
• Wrecks mood and memory
• Weakens the immune system
• Suppresses thyroid function

It’s not about just belly fat.

Why does someone have high cortisol?

• Poor sleep
• Overtraining
• Undereating
• Mental stress
• Caffeine abuse
• Blue light at night
• Blood sugar crashes
• Gut inflammation

Basically, everything in our modern life is a cortisol trap.

Fix 1: Deep sleep

Bad sleep raises cortisol up to 45% the next day.

Studies show:
• Deep sleep suppresses nighttime cortisol
• Sleep restriction leads to 48h+ elevated cortisol

Deep sleep directly regulates cortisol output.

Fix 2: Balance blood sugar

Blood sugar crashes spike cortisol.

Every crash triggers:
• Adrenal output → cortisol → glucose mobilization → fat storage

How to stop it:
• Cut liquid sugars + ultra-refined carbs
• Front-load protein at meals
• Add fiber + healthy fats

Fix 3: Low-impact resistance training + Zone 2 cardio

Studies show:
• Zone 2 cardio lowers resting cortisol
• Moderate resistance training increases resilience to stressors
• Excess HIIT → elevated cortisol → impaired fat loss

Overtraining spikes cortisol chronically.

Fix 4: Heal your gut

Your gut sends safety or danger signals to your brain.

A healthy gut sends "safe" signals to the brain, and cortisol normalizes.

Studies show probiotics like L. rhamnosus & B. longum reduce cortisol & anxiety.

Fix 5: Use proven adaptogens

Herbs literally buffer cortisol spikes.

The best backed by research is Ashwagandha (↓ cortisol up to 30%)

How to take it:
• 300–600mg/day
• Take for 8–12 weeks.
• Then cycle off.

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Remember…too little cortisol is just as dangerous.

Without enough cortisol:
• You can’t regulate inflammation
• Blood sugar crashes more often
• Energy tanks
• Stress feels overwhelming
• Recovery slows way down

It’s always about balance.

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