A BYU metabolic scientist spent 20 years studying why belly fat is impossible to lose. His finding: it's not about calories. It's about your HPA axis — and most people have NEVER heard of it. Here's what it is, why it's storing belly fat, and 6 ways to calm... it down:👇show more

Your HPA axis is a three-part alarm system: Hypothalamus → Pituitary → Adrenal glands. When your brain senses a threat — real or psychological — it fires this chain and floods your body with cortisol. It was designed for short bursts. Most high performers have it running all day.

Why belly fat is different (the receptor density fact): Here's what nobody tells you about belly fat. It has more cortisol receptors than any other fat tissue in your body. Your thighs don't respond to cortisol like this. Your arms don't. Your hips don't. Your belly is essentially built to receive the cortisol signals and store energy there first. This is why you can exercise hard and still watch your waist expand during a stressful season.

The exercise trap: High-intensity cardio is itself a cortisol event. If your HPA axis is already dysregulated and not recovering between sessions, you're adding cortisol on top of cortisol. The fat doesn't move. Sometimes it grows. You're not failing at fitness. You're winning at the wrong game.

The feedback loop that breaks: Under normal conditions, cortisol tells the HPA axis: "stand down, we've got this handled." Under chronic stress that feedback loop breaks. The HPA keeps firing. The adrenals keep producing. The belly keeps storing. This is a nervous system problem. Not a willpower problem.

Here's my 6 step protocol: 1. Sleep architecture (not just hours but quality) Your HPA axis resets during slow-wave sleep. Without it, the overnight shutdown never completes. Blood sugar stability at night matters more than magnesium.

2. Morning light within 30 minutes of waking Cortisol is supposed to spike in the morning. Light anchors that spike to the right time — so it also crashes at the right time. Without it, the curve stays flat and elevated all day. 10 minutes in the morning. Non-negotiable.

3. Walking — not cardio. Low-intensity long-duration movement activates the parasympathetic system without producing its own cortisol spike. This is why a walk is categorically different from a run when your nervous system is already overloaded. I recommend walking outdoors without your phone.

4. Slow exhale breathing (throughout the day). 4 counts in. 8 counts out. The extended exhale activates the vagus nerve — the direct brake on the HPA axis. Higher vagal tone is the single best physiological proxy for HPA regulation.

5. Blood sugar stability. Every blood sugar crash is a cortisol event. The HPA fires to mobilize glucose whenever levels drop. This is why skipping breakfast, running on coffee, and waking at 3 AM are all the same problem.

6. Psychological safety (the root protocol most never reach). The HPA axis doesn't just respond to what's happening now. It responds to what it LEARNED in the past. Early chronic stress can reprogram it to fire at threats that aren't there anymore. No amount of morning walks, sleep rest, breathing can fully resolves an HPA axis shaped by relational fear. This is where deep psychological work lives.

Most cortisol advice gives you protocols 1–5. Protocol 6 is the one that changes the pattern underneath the stress response. That’s what my ART community is built around. Take the Protection Pattern Quiz to find the emotional pattern that may be keeping your body stuck in survival mode:

The hidden issue isn’t belly fat. It’s the nervous system pattern underneath it: • people-pleasing • overperforming • overthinking Your body doesn’t release what your psyche still believes it needs for protection. Take the quiz:

Most men over 40 are trying to solve a hormone problem with a math problem. Calories matter. But chronically elevated cortisol changes hunger, sleep, insulin sensitivity, recovery, and where the body prefers to store energy. Which is why two men can eat the same diet and get very different results. The belly isn’t just a fat depot. It’s often a stress report card.

@mindfulmaven_ thanks for this information.

The hardest part is that most people don’t feel “stressed.” Foggy. Hungry at night. Wired at 3AM. Stuck in the same body no matter what they do. That’s why the HPA axis matters. It turns invisible emotional threat into physical symptoms.

The reason this matters: belly fat is often treated like a discipline problem. But for many people, it’s a nervous system problem. Your body will not release what it still believes it needs for protection.

During COV-ID, this woman was quite insistent on pushing untested jabs on the general public. You'll forgive me if I disregard 99% of what she says about health & wellness.

I hear you. The point I'm making is not about Dr. Patrick but the deeper issue around cortisol connected to anxiety and hyperviligance.

I know, but still. She cannot get a pass - she needs to be banished from the medical village. All of them need this reckoning. COV-ID & The Shots were war crimes, and we must have accountability; this can never be allowed to happen, ever again.

If you want to get started now, try my Imaginal Path to Anxiety Release. Here's the link:

Narrator: It's always about the calories.

Ha!

Sometimes the answer is less pressure, better recovery, and a calmer nervous system.

I think people are surprised about the big impact buried emotions have on their physical health.

The body changes fastest when it feels safe enough to stop fighting for survival.

That's so true. Thanks for your comment.

As a matter of fact mitochondrial function and gut health come before HPA axis. Stress is healthy. The problem is when you lack the capacity to handle it, therefore it accumulates or is experienced as a bigger thing than it is

Yes, you're right. There is healthy stress and we need it.

Childhood emotional neglect doesn’t just affect your mind — it reprograms your nervous system. You learn early that rest = danger and productivity = safety. Years later your body is still storing belly fat like it’s preparing for the next family crisis. The real work isn’t just breathing exercises. It’s rewiring what safety feels like.

Bingo! That is right on. It effects your whole life.

Is that Bikman? Another contrarian for sale.... he thinks and says ASCVD is all about "inflammation" and nothing to due with lipids. Never mind the 40 yrs of research thousands of RCT's and meta's. It does $ell to be a contrarian, on that point we agree.

Yes. That's Bikman.

HPA/cortisol signaling may influence abdominal fat distribution, but “belly fat isn’t about calories” is not accurate. A systematic review found obesity-related HPA findings are inconsistent, and another review shows calorie restriction/exercise reduce visceral abdominal fat. HPA: VAT loss:

Thanks for your feedback.

Of course. That’s exactly why these conversations are worth having. The closer we can keep the discourse to mechanisms, evidence, and uncertainty instead of slogans, the closer we get to the truth.

@BenBikmanPhD is a Legend

Light is super good limit pufa intake to not get sun burned also vitamin e if one had seed oils in his/hers diet to reduce the damage that they're gonna do and ray peat carrot salad

Wonderful point about light.

Thanks!

thank you

Sure. I'm glad the thread was helpful.

Easy fix. Try lactoferrin and green banana powder.

I never heard of green banana powder.

Hmm I’ll just stick to carnivore diet

Younger, working, very high stress, zero belly fat. Post-menopause, retired, no stress, belly fat.

Hmm.

The underrated part: cortisol doesn't just store belly fat. It directly suppresses slow-wave sleep, and poor deep sleep raises next-day cortisol ~37% (Leproult et al.). Self-reinforcing loop. You can actually catch it early on a wearable. Declining overnight HRV is one of the first signals the HPA axis is stuck, often months before the weight shows up.

The wild part is how little this gets talked about. Belly fat isn’t “stubborn,” it’s cortisol‑sensitive tissue, it literally has more cortisol receptors than anywhere else . If your HPA axis is firing all day, the physiology makes perfect sense.

Hormones play a role in how your body stores and burns energy, but the key driver rather you lose or gain weight is energy balance. Many scientists for some reason over complicate this simple fact.

Thanks for your comment.

So no need to keep doing exercises for my belly

Every week there’s some new supplement or protocol or exercise or diet.

cc @adamtaggart

@grok Did the author of this tweet promote Covid vaccines during the recent lockdowns 2020-2022? Be concise and list the most egregious vaccine promotion where it supports the affirmative.

@grok was sollte ich draus für mich mitnehmen wenn ich dauerhaft ein defizit von -800kcal fahre muss ich doch körperfett verlieren protein ist bei 2g pro kg

You do this, and I’ll tech people how to count macros and find their metabolic maintenance point and we will see who gets their faster These are more ways for people to confused and not see results

No need to overcomplicate. Calorie deficit is all that's needed to lose fat.

@threadreaderapp unroll

@threadreaderapp unroll

I

This all makes sense to me. I do wonder, and would like to understand: why the limited 30-minute window to get sun in the morning? I find it difficult to do so with such a short window. Why not an hour or 1 1/2 hour? Could I get some benefit (maybe reduced) at one hour?

This is the best article about cortisol, covering all psychological and physical factors.

Thanks Zayed.