There may not be a safe off-ramp for some taking GLP-1 drugs, study suggests
55 points
2 hours ago
| 13 comments
| arstechnica.com
| HN
tyleo
1 hour ago
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Interesting. Saying, "there may not be a safe off-ramp," doesn’t feel quite right. The article describes people losing weight while on the drugs and then regaining weight after stopping them. That's not ideal, but it does imply an off-ramp, just with regressions.

Compare that to something with no real off-ramp: testosterone replacement therapy. Once you're on TRT, you can permanently suppress your body's own testosterone production, and many men won't produce enough on their own afterward.

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sReinwald
22 minutes ago
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Strange framing, isn't it?

Bariatric surgery shows 25-65% significant regain rates depending on definition and timeframe. And regular dieting is even worse. Nobody would frame that as a safety issue. That's... just how weight loss works, not a unique GLP-1 problem.

Calling a return of symptoms (obesity) a "safety issue" is like saying insulin has "no safe off-ramp" because diabetics get hyperglycemic when they stop taking it.

Fear gets clicks, I guess.

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csense
11 minutes ago
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At some point, somebody at the site changed the title. The old title was "GLP-1 Drugs Improve Heart Health, But Only If You Keep Taking Them."

How do I know that? The URL slug tells the tale.

> Fear gets clicks, I guess

I strongly suspect this is the reason the title was changed.

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mise_en_place
24 minutes ago
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By what mechanism? That's not how it works. LH and FSH are suppressed when you're on TRT, but they stabilize after cessation. The question is, why would someone with clinical hypogonadism cease TRT?
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Aurornis
19 minutes ago
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> That's not how it works. LH and FSH are suppressed when you're on TRT, but they stabilize after cessation.

The testes atrophy over time when LH and FSH are suppressed. Even if LH and FSH return (which isn’t guaranteed) the testes need to be able to respond to those hormonal signals, but atrophied testes do not respond the same.

For someone with true intractable hypogonadism this hardly matters because they weren’t capable anyway. Many people prescribed TRT today don’t actually have intractable hypogonadism, though.

Body builders have some tricks to try to reverse this, but it’s not perfectly effective and even body builders know to cycle their steroids to avoid having prolonged periods of suppressed HPG axis activity. I was involved with weightlifting in my younger years but never dabbled with steroids or TRT. Everyone I know who did try testosterone or steroids thought they were doing it the safe way (HCG, PCT, limited cycle length) but became unable to produce enough endogenous testosterone by their 40s even with SERMs.

Men on TRT for years will have considerable testicular atrophy that is not totally reversible.

> The question is, why would someone with clinical hypogonadism cease TRT?

TRT is no longer limited to men with clinical hypogonadism. Men’s health clinics that advertise on social media, TV, and radio will prescribe to anyone who contacts them (and pays cash for the prescription and gear). In some surveys of patients on TRT, 1/4 of patients didn’t even have testosterone levels measured prior to initiation of TRT.

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financltravsty
47 seconds ago
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Curious on your thought to my reply: https://news.ycombinator.com/item?id=46059074

Can you share your longitudinal anecdata? I am considering going back on AAS for the QoL benefits, but would like to create a better mental model of long-term ramifications for testicular health.

It's my understanding that 40, it simply is expected that your hormones levels will be much lower (and that is not necessarily a bad thing). However my mind is failing to grasp what long-term damage TRT can do to the HPTA when not using an obscene amount of gear and on HCG.

Trying to figure out the mechanism. Perhaps receptor desensitization and epigenetic compensatory changes?

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mise_en_place
16 minutes ago
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> TRT is no longer limited to men with clinical hypogonadism. Men’s health clinics that advertise on social media, TV, and radio will prescribe to anyone who contacts them (and pays cash for the prescription and gear). In some surveys of patients on TRT, 1/4 of patients didn’t even have testosterone levels measured prior to initiation of TRT.

That's hugely problematic if true. They should be investigated and if found of wrongdoing, have their medical licenses revoked.

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Aurornis
9 minutes ago
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It’s true. You can even go on Reddit and find anecdotes and guides about which clinics to call and what to say to get prescribed with minimal hassle.

Some of the clinics were even prescribing anabolic steroids intended for terminal cancer patients.

If you want to read about something even crazier, look up the services that were started during COVID to be prescription mills for Adderall or Xanax. The relaxed COVID prescribing rules allowed telehealth providers to give schedule II prescriptions to new patients remotely, so services were created to advertise on TikTok and give prescriptions for a monthly fee. The FDA cracked down on these, though.

There’s even a famous story of a whistleblower who worked at one of these clinics and got reprimanded for not prescribing Adderall enough. There was a leaked memo where they pushed providers to prescribe Adderall over other options because their data showed the highest customer retention rate that way.

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jstummbillig
1 minute ago
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Did you use a LLM to write these comments?
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SpicyLemonZest
10 minutes ago
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I dunno. It seems straightforwardly analogous to the fake medical marijuana clinics you see in places where recreational use isn't legal, or the countless online pharmacies with doctors on retainer to prescribe Ozempic and Viagra. It's not how I would design the medical system if I were in charge, but these aren't addictive substances like opioids.
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Aurornis
3 minutes ago
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Testosterone induces physical dependency which can be irreversible when taken for prolonged periods.

I don’t think it’s analogous at all to medical marijuana.

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taeric
17 minutes ago
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Yeah, I would fully support "easy" there, but regaining weight isn't something most people think of as danger.
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fwip
9 minutes ago
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Many people who are losing weight are doing so because they're concerned about their health, right? Especially heart health.
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financltravsty
8 minutes ago
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As an experienced polysubstance researcher, that's not exactly accurate.

TRT cessation does not inherently cause men to have suppressed hormone levels after. With precautions and extra steps like HCG to maintain leydig cell/testicular function, preventing atrophy, one may safeguard against that risk.

Coming off TRT, yes you will have lower levels as your HPTA has been suppressed by exogenous hormones. One may speed up this recovery using "PCT" (post cycle therapy), which involves taking a SERM (selective estrogen receptor modulator, e.g. enclomiphene) to resensitize and restart your HPTA. However this is not always necessary, and if one takes a look at the HARLEM study, most users return to their baseline levels within a year of going cold turkey.

In the cases of true permanently lowered levels of hormones, I believe the two most common reasons are: using other AAS besides testosterone (1) and lifestyle or health factors that correlate with the need to be on TRT (2).

With 1, this can be seen in users of decadurabolin (deca), which notoriously has hormone receptor active metabolites that last around for atleast a year, continuously suppressing the system. Or trenbolone (tren/cattle bulking hormone) which is inherently neurally and endocrinically otherwise toxic.

With 2, you hop on TRT because there is some reason your hormones are not at healthy levels. Whatever the reason is, it is still there, and once you've stopped bandaiding the issue its effects resurface.

---

I have also used many GLP-1s (semaglutide, tirzepatide, and retatrutide). No there is no off-ramp, but the only effects I've noticed are a return to my baseline of appetite, and neurological state.

N.B. GLP-1s are good for impulse and behavioral disorders like ADHD, which it did help. However, I have decided to not take it due to the negative effects on personality and reward seeking behavior.

They are neuro-active in the brain, and their effects I've decided are not worth it.

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gtirloni
45 minutes ago
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If you're on TRT, you are already not producing enough on your own.
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Aurornis
33 minutes ago
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Unfortunately that’s not true any more. TRT over prescribing is a major problem right now.

Studies of TRT patients have even shown that 1/4 of TRT patients may not have had their testosterone levels measured before being prescribed TRT: (Source https://pmc.ncbi.nlm.nih.gov/articles/PMC6406807/ ) Completely unacceptable given how cheap testosterone testing is, but its happening.

TRT clinics have also become a big business. Their business model relies on prescribing TRT to anyone and then charging them monthly or quarterly to continue receiving those prescriptions, which as the parent comment noted become physically necessary after TRT causes the testes to atrophy.

The trick the clinics are using now is “diagnosing by symptoms”. They have a long list of “symptoms of low T” and the patient is basically prompted to check off enough boxes to justify TRT. It’s the same model as the medical marijuana card businesses where you can go in and the doctor will “find” a reason to give you the prescription.

It’s a real problem when combined with social media influencers who tell people that everything is a symptom of low testosterone and TRT will fix it.

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gadders
2 minutes ago
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>>The trick the clinics are using now is “diagnosing by symptoms”.

You can't really diagnose by levels, though, unless you knew what that person's previous levels were. Setting an average across a population is not really realistic - you can't say Shaq should work to the same levels as, say, Emo Phillips.

TRT is normally used due to aging, though, so you are unlikely to have your testosterone levels spontaneously recover as you get older. You do tend to need to be on it for life, in the same way that women stay on HRT.

However, if you did need to get off, bodybuilders have "post cycle therapies" to kick start production so it seems to be possible.

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tortilla
43 minutes ago
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Unless you went on when you weren't really low because the men's vitality clinic pushed you into a treatment protocol*

* not me but I see it with men in my age range

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Aurornis
23 minutes ago
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I’m getting downvoted in another comment for saying this, but it’s a growing problem. In some surveys of TRT patients up to 1/4 of them didn’t even have their testosterone levels measured before being prescribed TRT. The men’s health clinics are finding excuses to diagnose everyone who calls. The lifetime value of a monthly TRT customer is very high.
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PartiallyTyped
35 minutes ago
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I am a big fan of Dr Rohin Francis, and this landed on my youtube's front-page recently

https://www.youtube.com/watch?v=FPsKTfFQFqc

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theptip
32 minutes ago
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But TRT suppresses endogenous production further, so if you go off it you’re worse than when you started.
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lkey
30 minutes ago
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The body yearns for its prior homeostasis. This is true when you lose weight with a strict diet. It's true when you lose it using a medication.

The struggle doesn't stop when you stop losing. My personal experience was that it takes about 2 years for the new 'normal' to kick in. (I lost 60lbs when I was in my early 20s and kept it off until today. The 'after' period was as taxing as the 'losing' period, but in a different way)

At that point only can you 'relax' a bit around your body's cravings for calories.

This has already been studied extensively:

https://pmc.ncbi.nlm.nih.gov/articles/PMC5764193/

It's not the worst thing in the world to be on a medication for a couple years rather than a few months, but long-term study of this class of drugs is certainly warranted and necessary.

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perelin
33 minutes ago
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As a GLP-1 user im really surprised that this is newsworthy. The mechanism of how these drugs lead to weight loss is appetite reduction. On GLP-1s -> less appetite, off GLPS-1s -> more appetite. Given the general health benefits that are being observed with GLP1-s the only reason to get off them is costs imo. They are absurdly expensive. Hope this will change in the next 10 years with patents running out and generics being available for cheap. The actual cost of production seem to be quite low. Gray/black market has them available for around a tenth of the otc price.
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aishsh
16 minutes ago
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> Given the general health benefits that are being observed with GLP1-s the only reason to get off them is costs imo

There’s also the perverse incentives wrt broader society. Enabling the average person to control their physical health is orders of magnitude better for society and orders of magnitude less profitable than the current trends.

Maybe a setup where glp drugs are nationalized and only used to further understand why we have an obesity epidemic and eventually finance changes to combat it? Ideally the drug makers would do this without requiring government intervention, but I doubt they will.

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perelin
8 minutes ago
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100% agree. But that also feels like the elephant in the room somehow. Most western pension systems are stretched to (or beyond) their limits already. I expect that having GLP1-s widely available will extend the life of a LOT of people even further. And then ... what? Im really surprised that nobody talks about that.
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glp1guide
43 minutes ago
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> Of the 308 who benefited from tirzepatide, 254 (82 percent) regained at least 25 percent of the weight they had lost on the drug by week 88. Further, 177 (57 percent) regained at least 50 percent, and 74 (24 percent) regained at least 75 percent. Generally, the more weight people regained, the more their cardiovascular and metabolic health improvements reversed.

So weight loss was actually maintained for most people -- the hard part is finding a healthy daily lifestyle which can maintain the drastic effects of GLP1s.

This information isn't new -- weight regain has been studied before and I've written about it before:

https://glp1.guide/content/do-people-regain-all-the-weight-l...

The missing piece to this article is just how bad the alternative is -- never having the cardiovascular and metabolic benefits is clearly not the best strategy (and if simply changing patterns was so easy, people would have done it already).

GLP1s don't work for everyone but they're pretty close to miraculous in effect given the balance of positive and negative side effects. Making GLP1s cheaper & more tolerable then figuring out how to actually deal with the complex web of how to keep the weight off sustainably for most people seems like the right way forward here, not avoiding potentially life-saving medication because you may not be able to get off of it as fast as you want (if you can afford it).

BTW, there is already generic Liraglutide, and legal workarounds for getting compounded Semaglutide that already mean no one pays the $1000 that was in the zeitgeist a while ago. Even Lilly Direct and similar outfits from Novo sell for $500/month, with the $150/month pricing coming soon[0].

[0]: https://glp1guide.substack.com/p/negotiations-are-underway-f...

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bryanlarsen
1 hour ago
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The headline doesn't seem to match the article? 20% of participants did keep the weight off and 40% kept half the weight off after stopping.

So there appears to be an off-ramp, we just don't know what it is.

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NitpickLawyer
34 minutes ago
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> we just don't know what it is.

calories_in < calories_out seems to be a pretty good formula.

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falcor84
28 minutes ago
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It's almost the same as saying that the off-ramp for a cat to get off a tree is to apply a=g until h=0. It's technically correct, but I don't think it would help the cat to be aware of this.
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elevation
1 hour ago
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> regained significant amounts of the weight they had lost on the drug [...] blood pressure went back up, as did their cholesterol, hemoglobin A1c [...] fasting insulin

These symptoms will be familiar for anyone who has lost weight dieting and then returned to eating junk food.

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petercooper
1 hour ago
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"Generally, the more weight people regained, the more their cardiovascular and metabolic health improvements reversed."

You don't say ;-) I lost 50 lbs and have kept it off for the past year while maintaining great BP. But I'm under no illusions GLP-1 medications don't have dangers and cause problems for many. It should be handled on an individual basis like any serious medication.

That said, is someone losing a lot of weight then gaining half of it back worse than them just staying where they were? I don't know the answer to that one.

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quesera
36 minutes ago
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> losing a lot of weight then gaining half of it back

The trick, of course, is to repeat the process as you asymptotically approach your goal.

Zeno's paradox of mass.

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pajamasam
35 minutes ago
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For comparison, there also doesn't seem to be a "safe off-ramp" for obese patients from other weight loss interventions either: https://pmc.ncbi.nlm.nih.gov/articles/PMC4396554
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Argonaut998
28 minutes ago
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It’s no different from people who undergo gastric bypass surgery. Those with food addictions/habits manifest them elsewhere such as gambling, or if they are seriously addicted, they continue to eat which bursts their band.

My wife is back devouring cookies after being on mounjaro for 4 months. Thankfully she lost most weight all by herself so wasn’t totally reliant on the medication. But it’s crazy how noticeable the difference of one’s eating habits when on and off it.

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jitl
17 minutes ago
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It’s the same as any other intervention to reduce weight. I worked out and ate better for a year and lost 35lbs.

Then, I stopped working out, and gained 15lbs. Exercise: no safe off-ramp for some.

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samlinnfer
38 minutes ago
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>have unhealthy habits that causes weight gain

>stop taking weight loss drug

>regain weight

>there is no safe off-ramp for GLP-1

I guess taking weight loss drugs don't really teach healthy eating habits.

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constantcrying
48 minutes ago
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Or an alternative title: "36 months of tirzepatide permanently treated obesity in 17.5% of patients."

I think that it is quite unsurprising that without the drug a large amount of people revert to their previous behavior and with that will revert to their previous weight.

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Argonaut998
27 minutes ago
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Indefinitely, not permanently
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Mistletoe
1 hour ago
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There doesn’t need to be an off-ramp they just have to take it for life. Why would someone think they would keep the weight off? If they could they would have before Ozempic.
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saurik
51 minutes ago
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> Why would someone think they would keep the weight off? If they could they would have before Ozempic.

I think the intuition many people have--which I am not at all defending as correct, but it certainly isn't so obviously wrong that we should scoff at someone for thinking it works this way--is more like "if my weight was stable before I did this intervention, I just need to lose the weight and then my weight will once again be stable after it"; in this mental model, one would assume you only need lots of willpower to lose weight: after, you only will need as much willpower as you already know you have to not gain it back, as it isn't as if you are gaining weight currently.

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Mistletoe
13 minutes ago
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Yes I can see that completely, but we see the data doesn’t support it. The issue was biological all along.
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eps
1 hour ago
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> take it for life

That's literally the implication of these findings.

But one can always hope for a miracle drug that you can take for a bit, then stop, and have its effects last. Now we know that Ozempic is not that drug.

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RankingMember
40 minutes ago
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I think it would almost need to be some sort of genetic modifier, which may not be that far off.
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rhines
48 minutes ago
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I could see it building habits that persist even when no longer using the drugs. They've found other things to fill their time instead of eating, and things which would previously trigger them to start eating now trigger them to do other things.

There's of course a risk that when they stop the drugs that hunger will drive them to re-establish those habits, but now that they have new habits that fight that hunger they are in a much better position to resist it than they were when they'd initially established their eating patterns.

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unethical_ban
55 minutes ago
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I imagine the idea for some is "if I can just get myself healthier, I can then stay motivated to maintain the healthier lifestyle required to stay skinny without the drugs"
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