When a Full Belly Makes Your Chest Tight and Your Heart Race

"Whenever I eat, my chest feels tight and my heart races."

People who come to me with this have usually been to a cardiologist first. They've had an ECG, an echocardiogram, even a Holter monitor, and everything was normal. So they come having been told it's "nervous stress."

I feel these people's bellies. They are usually taut.

Between the belly and the chest there is only one membrane

We think of the belly and the chest as different places. In truth they sit stuck together with only a single thin muscular membrane called the diaphragm between them.

On top of that membrane rest the heart and the lungs. Below it are the stomach and the intestines.

When the lower part swells, the upper part gets pressed. That's only natural. Yet this natural fact is often forgotten in the exam room. Because when the chest feels tight, the chest is what gets examined.

What is actually happening

   Gas builds up and the stomach and intestines swell
              ↓
   The diaphragm is pushed upward
              ↓
   ┌──────────┬──────────┬──────────┐
   ↓          ↓          ↓          ↓
 The heart   The lungs   Can't take  The visceral
 is pressed  have no     a deep      nerves are
             room to     breath      irritated
             expand
   ↓          ↓          ↓          ↓
 Palpitations Chest      Shallow,    Autonomic
 rapid pulse  tightness  rapid       nervous
                         breathing   reaction

Here one more nasty loop gets created.

When you can't take a deep breath, you breathe shallowly and rapidly. Then too much carbon dioxide gets blown off, the blood tilts toward alkaline, and your hands and feet tingle, you feel dizzy, and your heart races even more.

And when you become anxious, you swallow more air. The belly swells even more.

That's why the tests are normal

The heart is normal. It's just being pressed.

The lungs, too, are normal. They just have no room to expand.

It's not that the function is broken, but that the environment in which that function sits has changed. That's why, when you examine the organs, nothing shows up.

The things these people say

These are expressions I hear often in the exam room. See if any apply to you.

• After eating, you can't lie down
• You find yourself sighing often
• After you burp, you feel better for a moment
• When you loosen your belt, you can breathe
• Mornings are more comfortable than evenings
• When gas passes, the palpitations settle down

The statement "I feel better when I burp" is especially important. If it were a heart problem, burping wouldn't make it better.

But why does the belly swell?

Here we have to go one layer deeper. Because the swollen belly, too, is a result.

First, the case where the intestines aren't moving.
When food doesn't pass at the speed it should, it ferments right there. Gas forms.

Second, the case where the intestines have become oversensitive.
There are people who feel great pressure even though the actual amount of gas isn't much. Even when the exam shows little gas, they say it feels "like it's about to burst." This is not faking. The sensory nerves of the gut have become oversensitive.

Third, the case where tension has become long-standing.
When the autonomic nervous system stays on constant alert, the movement of the intestines gets pushed back. Because the body takes digestion off the priority list.

So this is the place I work on

I don't start with the chest. I look at the side doing the pressing, not the side being pressed.

First, I lower the pressure in the gut. When the swelling settles, room opens up for the diaphragm to come down.

Next, I soothe the oversensitized sensation. I help it be less startled by the same pressure.

Then the breath deepens. When the breath deepens, carbon dioxide returns to normal, and the palpitations and dizziness settle down together.

Finally, the autonomic nervous system calms. When there's nothing left to startle it, it settles down on its own.

It's not that treating the chest makes the chest comfortable. The belly becomes comfortable, and so the chest becomes comfortable.

Things you can try starting today

There are things that help even before you take medicine.

Eat slowly. Eating fast means swallowing air along with the food.
Talk less while eating. For the same reason.
Don't lie down right after eating. Sit or walk for 30 minutes.
Keep your belt loose. It looks silly, but it actually makes a difference.
Exhale long. Don't inhale big — make the exhale time long.

If there are foods that produce gas (beans, onions, wheat, dairy), try cutting them out for a few days and see whether things change. You don't need to cut them all out. What matters is knowing which one is a problem for you.

Cases where you must go to a hospital first

Even if, reading this, you think "that's my story," there are things that must be ruled out first. This is not negotiable.

• Your chest hurts as if being squeezed and radiates to the jaw or left arm
• Your chest hurts when climbing stairs or exerting yourself (and gets better with rest)
• You're short of breath even at rest, and it gets worse when you lie down
• Your chest hurts along with a cold sweat
• Your weight has dropped noticeably
• Black stool, or blood mixed in the stool
• You have difficulty swallowing

Heart disease and stomach disease have symptoms that are startlingly similar. In fact, there are cases where a heart attack presents like indigestion. Come after those have been ruled out.

To be honest

That when the intestines swell, the diaphragm is pushed and the heart and lungs are pressed is an anatomically obvious fact. That shallow breathing produces low carbon dioxide and alkalosis, and that this produces palpitations and tingling, is also established physiology.

However, how much herbal medicine reverses which link of this chain has not yet been sufficiently confirmed in humans. In clinical practice I see it help, but I will not present that as if it were a proven fact.

And there are also many palpitations that this framework does not explain. Saying "no" when it's no is half of my work.

---

If you've been told your chest feels tight but your heart is normal, try asking once:

"What about my belly?"

It's possible that no one has looked at it.