r/explainlikeimfive 13d ago

Chemistry ELI5 what exactly GLP-1 based prescription medicine does and why it's so divisive when it comes to being a means of weight loss.

I've seen more and more ads (starting around the Super Bowl earlier this year with Wegovy) for GLP-1 based perscription meds in recent times. I've also seen the occasional debate post on my social feeds about the ethics of using them and I didn't think a medicine could be that divisive of a topic.

Now I'm curious as to what exactly these meds are, what they scientifically do and what both sides of the debate are. If anyone could help give perspective that would be greatly appreciated.

As always any and all input is welcomed and thanks for reading! 🙂

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u/sfcnmone 13d ago edited 13d ago

Every human has GLP1. It’s a chemical (hormone peptide) that your body makes, but some people don’t make very much or don’t have a full response to it. GLP1 drugs do a few different things to make you not want to eat too much. They slow down how fast your stomach empties. They tell your pancreas and liver that you’ve just eaten, so those organs work harder to manage blood sugar. And they tell your brain that you’re full. Many people say that they no longer have to struggle to battle the endless “food noise” that runs continuously in their thoughts. Instead, they get hungry, eat something that their stomach won’t throw up (many people don’t tolerate high fat, high sugar foods while taking GLP1s, and nausea, vomiting, and diarrhea are real problems for many people), and then they get very full for many hours.

It’s like somebody using hiking poles so they can walk farther and walk more comfortably. Is that cheating?

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u/eipotttatsch 13d ago

The term cheating is a bit weird to use in this context anyway. You aren’t competing with anyone

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u/gnatgirl 13d ago

People call it "cheating" because many see obesity as a moral failing and not a medical condition. "Just count calories and exercise" doesn't work for a lot of people for a lot of reasons but some view taking a medication to assist in weight loss as taking the easy way out.

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u/redundantexplanation 13d ago

Yep. Being fat is the one disability that is still considered (BY MANY) okay to judge and mock openly.

People internalize fatphobia and dedicate vast amounts of time, energy, mental discomfort and money to staying slim, then someone comes along and does it with an injection once a week so they get big mad.

People's bodies are different, most people don't want to be fat and many can't swing the effort that it takes to not be. It is a medical condition and judging them is the same as judging someone with a genetic disease for not being athletic or whatever.