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Simulation shows what happens to your body when you take weight loss drugs
Home>News
Published 18:53 11 Jun 2026 GMT+1

Simulation shows what happens to your body when you take weight loss drugs

Zack D Films showed YouTubers what happens internally when you inject yourself with drugs like Ozempic

Britt Jones

Britt Jones

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Weight loss drugs are all the rage, but not everyone truly understands what happens when it enters your bloodstream.

However, now it has been explained by none other than Zack D Films, someone who probably makes the most detailed and visually squeamish simulations on YouTube.

So, we all kind of know how drugs like Ozempic works.

You take it, and then at some point, you start needing to find smaller clothes thanks to all your weight loss.

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Kind of.

Apparently, there’s a lot more science to it than that, and that’s where Zack steps in.

Zack D Films explained the impact of weight loss drugs (YouTube/ZackDFilms)
Zack D Films explained the impact of weight loss drugs (YouTube/ZackDFilms)

His simulation shows the internal structure of what happens when GLP-1 medication like Ozempic hits your blood, and it’s pretty major.

They get into your system, target part of your brain that holds your appetite, and it suppresses it, as well as levelling out your insulin and blood sugar, says Zack in his clip.

The voiceover for the video simulation says: "Once Ozempic is in your bloodstream, it activates the parts of the brain that make you feel full, reducing your appetite," he said in the clip.

"It also stabilises your blood sugar, stopping sudden cravings.

"Then it slows down how fast your stomach empties food, which keeps you feeling full for longer after a meal.

"This causes you to lose weight as you eat less.

"But it can make some people feel sick and even give them diarrhoea."

At the end, Zack tactfully included a scene of the man running to the bathroom with poo falling out of his trouser legs.

Nice.

To this, people were rightfully icked out.

One person wrote of the clip: “Tbh, watching Zack’s animations make me lose my appetite more than Ozempic.”

Another pointed out: “Bro him running with the dhirirea spilling out behind him.”

Someone else said: “Zack i am currently eating chocolate and that last part made me lose my cravings, thank you for working better than an ozempic.”

Anyway, always make sure you’re being careful when taking these types of trugs, as one woman revealing the serious side effects associated with weight-loss medication known as 'exercise in a jab'.

This comes in the form of a jab known as Retatrutide, which is currently undergoing clinical trials.

Known as the 'triple-G' or 'Godzilla' of weight-loss medication, Retatrutide targets three different hormone receptors to suppress appetite and increase fat burning.

But it saw the woman hit ‘rock bottom’.

So, take to a professional before you take anything.

Featured Image Credit: YouTube/ZackDFilms

Topics: Ozempic, Health, YouTube

Britt Jones
Britt Jones

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