You eat half a sandwich and feel like you swallowed a brick.

A few bites of dinner leave you uncomfortably full for the rest of the night. You go to bed still tasting the meal you ate six hours earlier. Some mornings, you wake up feeling like dinner never moved at all.

Here's the mechanism behind that.

Every GLP-1 medication slows something called gastric emptying — the rate at which food leaves your stomach and enters your intestines. That slowdown is part of how the medication works. It's why you feel full faster, why you eat less, and why the scale finally moved.

But for a lot of women, the stomach slows too much.

Food that should leave your stomach in two hours sits for five, six, seven hours. By the time it does empty, the next meal is already on top of it. The whole digestive train backs up — and the backup begins at the very first stop.

Every doctor said the same thing: "Add more fiber."

So you did. Fiber gummies. Psyllium powder. Fiber cereal. Fiber bars. And within a few days, your stomach got worse.

Heavier. Tighter. The bloat got more visible, not less. You started avoiding mirrors and elastic waistbands.

There's a specific reason this happens for GLP-1 users — and it's not true for the general population.

Fiber works by adding bulk that stimulates intestinal movement. That's helpful when your digestive system is functioning at normal speed. But when your stomach is already slowed by a GLP-1 medication, adding bulk on top of a system that isn't moving is like dumping more cars into a freeway pile-up.

You're not adding flow. You're adding mass to a backup that hasn't cleared.

You know the burp.

The one you try to swallow back during meetings. The one that makes you fake a cough mid-sentence. The one that makes you sleep facing away from your husband.

That smell isn't random. It's a specific compound called hydrogen sulfide — and there's a specific chemical reason it shows up in your mouth.

When food sits in your stomach for too long, the bacteria that live there start fermenting it. This is the same biological process that produces sulfur smells in spoiled food, in stagnant water, in compost heaps. As proteins and sulfur-containing compounds break down without oxygen, they release hydrogen sulfide gas.

That gas has nowhere to go but up.

So you burp it. Sometimes hours after a meal. Sometimes when you've barely eaten at all.

The first month on your shot, Miralax did the trick. By six months you needed magnesium too. A year in, you're stacking three or four products and the bathroom calendar still reads four, six, eight days between movements.

This isn't your imagination. There's a specific reason chronic GLP-1 constipation gets harder to treat the longer you treat it the wrong way.

Stimulant and osmotic laxatives work by forcing the colon to contract or pulling water into the colon. Both responses fade with regular use. Your body adapts. The dose that worked at the start barely registers at month six.

Meanwhile, the upstream slowdown that started this whole problem is still there — and getting worse, because nothing you're doing addresses it. Food keeps sitting too long. Fermentation keeps building. The bottleneck keeps tightening.

You used to plan meals.

Now you plan around them. You skip the lunch invitation because you're afraid of being away from a bathroom. At restaurants the menu has shrunk to soup or a salad — nothing that could "set things off." Breakfast disappeared months ago because nothing in the morning feels safe.

You've quietly become afraid of food.

This is the part most women don't say out loud. Not because they don't notice it, but because they don't know how to explain it to anyone who isn't living it.

When your stomach becomes unpredictable, your relationship with eating changes. You start associating meals with consequences — bloating, burping, hours of pressure, the bathroom emergency that may or may not come. The brain learns the pattern. Avoidance feels like control.

But avoidance isn't a treatment. It's a symptom.

And it leads to the question almost every long-term GLP-1 user has asked herself in private: